1. Department of Linguistics, Yale University, 322 HGS, New Haven, Connecticut 06520-8236,
2. Department of Psychology, University of Pittsburgh, 405 Langley Hall, Pittsburgh, Pennsylvania 15260,
3. Department of Linguistics and Philosophy, E39-237, MIT, Cambridge, Massachusetts 02139,
4. Department of Brain and Cognitive Sciences, and Department of Linguistics and Philosophy, NE20-409, MIT, Cambridge, Massachusetts 02139,