... feature (RB, IM:Cast).PositiveNegative(IN, Other), (TO, IM:Date)(VBD, Other)(IN, IM:Cast)(CD, IM:Date)(CD, IH)(RB, IM:Cast)(IN, IM:Character)Table 6: Syntactic features with the < /b> largest ... respectively. For both A3and A4, the < /b> number of < /b> such semantic features isequal to the < /b> number of < /b> lexicons multiplied by the< /b> number of < /b> state labels. The < /b> same source of < /b> semantic knowledge can beconveniently ... syntactic features. The < /b> semantic features canbe constructed from structured data sources or bymining query logs, while the < /b> syntactic features canbe obtained by readily-available syntactic analy-sis...