The BLLIP (Brown Laboratory for Linguistic Information Processing) natural language reranking parser. Created originally by Eugene Charniak and Mark Johnson. Improvements by Matt Lease, David McClosky, William Headden, Jenine Turner, Micha Elsner, and others. Be warned, this is academic code! This version of the code includes David McClosky's modifications since the August 2006 release. This parser is also known as the Charniak parser, the Charniak-Johnson reranking parser, and the Brown parser.