12. The computer-assisted method of claim 1 , wherein the text unit comprises a sentence, wherein the token types comprises one or more of a first token type defining a token that matches the subject of the sentence, a second token type defining a token that is the head of a multi-word phrase in the subject of the sentence, a third token type that is a modifier in a multi-word phrase in the subject of the sentence, or a fourth token type defining a token that matches the predicate of the sentence.
12. The computer-assisted method of claim 1 , wherein the text unit comprises a sentence, wherein the token types comprises one or more of a first token type defining a token that matches the subject of the sentence, a second token type defining a token that is the head of a multi-word phrase in the subject of the sentence, a third token type that is a modifier in a multi-word phrase in the subject of the sentence, or a fourth token type defining a token that matches the predicate of the sentence. 13. The computer-assisted method of claim 12 , wherein the token types comprises one or more of a fifth token type defining a token that is the head of a sub-phrase in the predicate of the sentence, a sixth token type defining a token that is a modifier in a sub-phrase in the predicate of the sentence, or a seventh token type defining a token that is in any other text in the sentence.