10. The method of claim 1 wherein determining a first semantic template relevant to the syntactic template comprises: building at least one atomic semantic template from the syntactic template; and building a complex semantic template from the at least one atomic semantic template wherein the complex semantic template comprises at least one prohibitive clause, the at least one prohibitive clause comprising an expression relevant to the feature that does not convey sentiment.
11. The method of claim 10 wherein: building at least one atomic semantic template comprises building a first and a second atomic semantic template; and building the complex semantic template comprises resolving a conflict between the first and the second atomic semantic templates.