CREATE TABLE table_42906 ("Res." CLOB, "Record" CLOB, "Opponent" CLOB, "Method" CLOB, "Event" CLOB, "Round" FLOAT)

Which method's opponent was chris clark?
SELECT "Method" FROM table_42906 WHERE "Opponent" = 'chris clark'
SELECT "Method" FROM "table_42906" WHERE "Opponent" = 'chris clark'