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An assumption shared by many theories of discourse is that discourse structure constrains anaphora resolution (cf. [Grosz and Sidner 1986] for definite NPs, [Lascarides and Asher 1991], [Nakhimovsky 1988] for temporal anaphora, [Webber 1990] for deictic pronouns and [Gardent 1991], [Prfist and Scha 1990] for VP ellipsis). The aim of this paper is (i) to show that this assumption also applies to multiple VP ellipsis (VPE), (ii) to argue that other levels of linguistic information (such as syntax and semantics) interact with discourse structure in determining multiple VPE acceptability and (iii)to make these intuitions precise by providing a unification-based. | A unification-based approach to multiple VP Ellipsis resolution Claire Gardent GRIL Université de Clermont-Ferrand France and Department of Computational Linguistics Universiteit van Amsterdam Spuistraat 134 1012 VB Amsterdam The Netherlands E-mail claire@mars.let.uva.nl Abstract An assumption shared by many theories of discourse is that discourse structure constrains anaphora resolution cf. Grosz and Sidner 1986 for definite NPs Lascarides and Asher 1991 Nakhimovsky 1988 for temporal anaphora Webber 1990 for deictic pronouns and Gardent 1991 Priist and Scha 1990 for VP ellipsis . The aim of this paper is i to show that this assumption also applies to multiple VP ellipsis VPE ii to argue that other levels of linguistic information such as syntax and semantics interact with discourse structure in determining multiple VPE acceptability and iii to make these intuitions precise by providing a unification-based account of multiple VPE resolution. 1 Introduction Klein and Stainton-Ellis 1989 convincingly argue that VPE need not resolve to the nearest possible antecedent. The most intricate examples they give to support this claim involve what they dubbed multiple VPE and can be illustrated by the following discourses square brackets surround antecedent VPs 0 - indicates VP ellipses and indices represent anaphoric dependencies 1 The work reported here was partially carried out in the LRE Project 61-062 Towards a declarative theory of discourse. 1 Although this data often raises suspicion among linguistic audiences as to its credibility the facts are that 1 it is real life data and 2 it can be understood and it is usually understood in an unambiguous fashion. Hence 1 I promised myself I 1 wouldn t go to Manchester unless I first 2 opened a big stack of mail . I didn t 02 so I didn t 01. Nesting 2 If you 1 work hard make the right choices and keep your nose clean you 2 get ahead . If you don t 01 you don t 02- Crossing 3 I was 1 really thin then and I tried some skipants .
