9. The method of claim 6 , wherein the first term is extracted based on a grammatical attribute associated with the first term, or based on a semantic attribute associated with the first term.
9. The method of claim 6 , wherein the first term is extracted based on a grammatical attribute associated with the first term, or based on a semantic attribute associated with the first term. 10. The method of claim 9 , wherein the grammatical attribute includes parts of speech and grammatical roles of at least a subject, a predicate, a sub-phrase of a multi-word phrase, a modifier in a multi-word phrase, a head of a multi-word phrase, a direct or indirect object, a predicative, a complement, wherein the semantic attribute includes at least an action, a thing or a person, an agent of an action, a recipient of an action or a thing, a state or status of an object, a mental or physical state of a person, a positive or negative opinion, a name of product or service or an organization.