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Demonstrative Pronouns and Personal Pronouns. German der vs. er.

Demonstrative Pronouns and Personal Pronouns. German der vs. er.

Demonstrative Pronouns and Personal Pronouns. German der vs. er.

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we have not been able to acquire. So we have to<br />

leave this point to speculation 3 .<br />

So, why would one want a computational<br />

identification of demonstratives, <strong>and</strong> why would<br />

one want a bett<strong>er</strong> un<strong>d<strong>er</strong></strong>st<strong>and</strong>ing of their ref<strong>er</strong>ence?<br />

On the one h<strong>and</strong>, th<strong>er</strong>e is of course the motivation<br />

from applications, similar as for all oth<strong>er</strong><br />

work on ref<strong>er</strong>ence resolution: A treatment of<br />

demonstratives is clearly needed, e.g., for machine<br />

translation. Nearly no <strong>G<strong>er</strong>man</strong> demonstrative<br />

can be adequately translated into English, or<br />

most oth<strong>er</strong> languages, without ref<strong>er</strong>ence resolution.<br />

On the oth<strong>er</strong> h<strong>and</strong>, independent of applications,<br />

we believe that an improved un<strong>d<strong>er</strong></strong>st<strong>and</strong>ing<br />

of demonstratives may contribute both to a bett<strong>er</strong><br />

un<strong>d<strong>er</strong></strong>st<strong>and</strong>ing of processes of pronominal ref<strong>er</strong>ence<br />

<strong>and</strong> to theoretical accounts of information<br />

structure <strong>and</strong> the dynamics of discourse.<br />

The int<strong>er</strong>esting point about <strong>G<strong>er</strong>man</strong> demonstratives<br />

in this connection is that they allow for<br />

a fairly direct comparison of pronominal anaphoric<br />

<strong>and</strong> demonstrative ref<strong>er</strong>ence in a way this<br />

comparison is not possible for oth<strong>er</strong> languages.<br />

In English we could look at diff<strong>er</strong>ences between<br />

it, this, <strong>and</strong> that. But h<strong>er</strong>e the range of potential<br />

ref<strong>er</strong>ents brings in a numb<strong>er</strong> of additional complications<br />

(cf. Passonneau 1989, Webb<strong>er</strong> 1991,<br />

Eck<strong>er</strong>t & Strube 2000) that are avoided when we<br />

compare p<strong>er</strong>sonal <strong>and</strong> demonstrative pronouns in<br />

<strong>G<strong>er</strong>man</strong>.<br />

This pap<strong>er</strong> takes a few modest steps towards<br />

an account of the distribution <strong>and</strong> ref<strong>er</strong>ence of<br />

demonstratives, but what we have to off<strong>er</strong> is still<br />

work in progress. We have not yet looked at all<br />

forms of the demonstrative. What we have<br />

worked out so far is an hypothesis about the distinction<br />

between diff<strong>er</strong>ent uses of the demonstrative<br />

<strong>and</strong> p<strong>er</strong>sonal pronouns, <strong>and</strong> we have put this<br />

hypothesis to the test with a small 350,000 word<br />

corpus of written <strong>G<strong>er</strong>man</strong>.<br />

3 The V<strong>er</strong>bmobil corpus of spoken <strong>G<strong>er</strong>man</strong> (http:// v<strong>er</strong>bmobil.dfki.de/)<br />

has a ratio of p<strong>er</strong>sonal pronouns to demonstratives of<br />

1:4, while the Negra corpus of written <strong>G<strong>er</strong>man</strong> yields about 8:1.<br />

Howev<strong>er</strong>, this comparison remains inconclusive: the V<strong>er</strong>bmobil<br />

corpus consists of dialogues negotiating the time <strong>and</strong> place of appointments,<br />

while the Negra corpus is a regular daily newspap<strong>er</strong><br />

corpus with obviously vastly diff<strong>er</strong>ent discourse structure.<br />

2 <strong>Demonstrative</strong> <strong>and</strong> p<strong>er</strong>sonal pronouns<br />

At a first glance th<strong>er</strong>e is consi<strong>d<strong>er</strong></strong>able ov<strong>er</strong>lap in<br />

the distribution of demonstrative <strong>and</strong> p<strong>er</strong>sonal<br />

pronouns. In many contexts, as already in example<br />

(2), eith<strong>er</strong> form seems acceptable <strong>and</strong> semantic,<br />

pragmatic, or even stylistic diff<strong>er</strong>ences are<br />

hard to pinpoint. This is also true in the following<br />

cases:<br />

(3) Am Dienstag, 16. Juni, können dann Falkenstein<strong>er</strong><br />

ihren Son<strong>d<strong>er</strong></strong>müll von 9 bis 10 Uhr zu<br />

dem Wagen bringen. {Er/D<strong>er</strong>} parkt auf<br />

dem Parkplatz beim Bürg<strong>er</strong>haus.<br />

[On Tuesday, 16 June, the Falkenstein<strong>er</strong>s can<br />

take their hazardous waste to the van between<br />

9 <strong>and</strong> 10 a.m. It is parked in the parking<br />

lot at the Civic Centre.]<br />

(4) Zunächst waren die Mietfor<strong>d<strong>er</strong></strong>ungen des<br />

Investors (38 Mark pro Quadratmet<strong>er</strong>) zu<br />

hoch. {Er/D<strong>er</strong>} reduzi<strong>er</strong>te sie dann auf unt<strong>er</strong><br />

30 Mark.<br />

[At first the rent dem<strong>and</strong>s of the investor (38<br />

marks p<strong>er</strong> square met<strong>er</strong>) w<strong>er</strong>e too high. Then<br />

he reduced them to un<strong>d<strong>er</strong></strong> 30 Marks.]<br />

The impression that th<strong>er</strong>e is an area of ov<strong>er</strong>lap<br />

wh<strong>er</strong>e the function of the demonstrative pronoun<br />

is indistinguishable from the anaphoric p<strong>er</strong>sonal<br />

pronoun <strong>and</strong> wh<strong>er</strong>e the two forms could be substituted<br />

for each oth<strong>er</strong> without a clear grammatical<br />

or semantic diff<strong>er</strong>ence was confirmed in two<br />

psycholinguistic exp<strong>er</strong>iments carried out by our<br />

project group (see Cummins et al. (in preparation)).<br />

Self-paced reading as well as native<br />

speak<strong>er</strong>s' acceptability pref<strong>er</strong>ences yielded no<br />

significant diff<strong>er</strong>ence.<br />

This functional ov<strong>er</strong>lap of p<strong>er</strong>sonal <strong>and</strong> demonstrative<br />

pronouns may well be an artefact of<br />

un<strong>d<strong>er</strong></strong>specified data though. If, as we shall argue,<br />

the diff<strong>er</strong>ence between the two types of pronouns<br />

is a matt<strong>er</strong> of information structure, then the distinction<br />

may not show up when not enough information<br />

structure is visible – most clearly<br />

when we consi<strong>d<strong>er</strong></strong> odd sentences in isolation, but<br />

often also in sentence pairs.<br />

Still, th<strong>er</strong>e are occurrences of the two pronoun<br />

types for which the diff<strong>er</strong>ence is quite clear<br />

as already in (1), repeated h<strong>er</strong>e:

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