Outline/Punchline
Starting point: the  robust system for resolving definite
descriptions in (Poesio and Vieira, 1998, 2000)
Using heuristics and accessing WordNet
Large-scale evaluation
Weaker aspect of the system: bridging descriptions
Difficult to annotate reliably
Main problem: lack of lexical and commonsense
knowledge
Need to keep track of salient entities (‘focusing’?)