CREATE TABLE table_2413292_1 (semifinal_matches VARCHAR2, commercial_name VARCHAR2)

Who played in the semi finals matches at the Buick WCT finals?
SELECT semifinal_matches FROM table_2413292_1 WHERE commercial_name = "Buick WCT Finals"
SELECT "semifinal_matches" FROM "table_2413292_1" WHERE "Buick WCT Finals" = "commercial_name"