Abstract
This technical report describes the extended discourse representation structures (DRS) derived from texts written in version 4 of Attempto Controlled English (ACE 4). The need to extend the standard DRS representation arose from the two requirements to adequately represent plural nouns introduced into ACE 4, and to perform logical deductions on ACE texts. The discourse representation structure itself uses a reified, or 'flat' notation, meaning that its atomic conditions are built from a small number of predefined predicates that take constants standing for words of the ACE text as their arguments. Furthermore, each logical atom gets an index relating it to the sentence of the ACE text from which it was derived.

URL:
http://rewerse.net/publications/rewerse-publications.html#REWERSE-TR-2006-06

BibTeX:

@techreport{REWERSE-TR-2006-06,
	author = {Norbert E. Fuchs and Stefan H\"ofler and Kaarel Kaljurand and Tobias Kuhn and Gerold Schneider and Uta Schwertel},
	title = {Extended Discourse Representation Structures in Attempto Controlled English},
	institution = {Institute for Informatics, University of Munich},
	year = {2006},
	type = {{research report, REWERSE-TR-2006-06}},
	number = {REWERSE-TR-2006-06},
	note = {Technical Report ifi-2006.07, Department of Informatics, University of Zurich},
	url = {http://rewerse.net/publications/rewerse-publications.html#REWERSE-TR-2006-06}
}