References and credits

The hand-tagged closed corpus is a joint effort of the English team, supervised by John Dienhart.

The Constraint Grammar analysis used in our open system is based on lingsoft's ENGCG parser. Additional rules and subclause grammar by Eckhard Bick, ENGCG-tuning rules and semantic rules by Henrik Kasch.

The PSG-grammar used for generating syntactic tree structures was written by Eckhard Bick and uses Martin Carlsen's cg2tree compiler. The system's semantic categories are based on Princeton University's WordNet.