Chris Fox is a Reader in the Department of Computer Science at the University of Essex. In addition to numerous papers, his previous publications in the area of computational semantics include The Ontology of Language: Properties, Individuals, and Discourse (2000).

Shalom Lappin is Professor of Computer Science at King’s College, London. He has published extensively on issues in computational linguistics and formal grammar, and his books include Local Constraints vs. Economy (with David Johnson, 1999), Fragments: Studies in Ellipsis and Gapping (edited with Elabbas Benmamoun, 1999), and The Handbook of Contemporary Semantic Theory (edited, Blackwell, 1996).