The Class WordDistanceBetweenEntities is an implementation of RelationshipConstraint
that indicates that the order of the entities is not relevant since the relationship
is symmetric.
The Class EntityBasedChunkingFG is a candidate sentence feature generator that chunks
tokens according to the boundaries of the entities in the candidate sentence.
The Interface EntityMatcher represents is used to force the implementation of methods
to determine if two entities match according to a given criterion.
The Class EqualsEntityMatcher is an implementation of the EntityMatcher that
uses the equals method ot the entities directly to determine if they match.
Extract specific patterns from the document in the parameter list for the specified relationship and other matching relationships in the same document.