Subsequent work:
We have been working to improve the performance of the
system  developing
Better annotation methods (MATE, GNOME)
Unsupervised methods for lexical acquisition
Basic vector-space methods for synonymy (Poesio,
Schulte im Walde, and Brew, 1998)
Syntactic constructions for meronymy (Poesio et al,
LREC 2002)
Focus-tracking methods (Poesio et al, 2000, to appear)