CREATE TABLE table_26614 ("Date Final" CLOB, "Tournament" CLOB, "Commercial Name" CLOB, "Category" CLOB, "Prize Money/ Surface" CLOB, "Final Match" CLOB, "Semifinal Matches" CLOB)

Who played in the semi finals matches at the Buick WCT finals?
SELECT "Semifinal Matches" FROM table_26614 WHERE "Commercial Name" = 'Buick WCT Finals'
SELECT "Semifinal Matches" FROM "table_26614" WHERE "Commercial Name" = 'Buick WCT Finals'