4. The method of claim 3 , wherein the node-type of the at least one node is a secondary class node type and said step of selecting comprises: determining which node has a secondary class node type, that is at a lower position within the grammatical tree than any other node having a secondary class node type.
4. The method of claim 3 , wherein the node-type of the at least one node is a secondary class node type and said step of selecting comprises: determining which node has a secondary class node type, that is at a lower position within the grammatical tree than any other node having a secondary class node type. 5. The method of claim 4 , wherein the secondary class node type comprises at least one of a node type representing a prepositional phrase, an adjective phrase, an adverbial phrase, or a dependent clause.