A Procedure for Quantitatively Comparing the Syntactic Coverage of English Grammars E Black author S Abney author D Flickenger author C Gdaniec author R Grishman author P Harrison author D Hindle author R Ingria author F Jelinek author J Klavans author M Liberman author M Marcus author S Roukos author B Santorini author T Strzalkowski author 1991 text Speech and Natural Language: Proceedings of a Workshop Held at Pacific Grove, California, February 19-22, 1991 conference publication black-etal-1991-procedure https://aclanthology.org/H91-1060/ 1991