CREATE TABLE table_71456 ("Entrant" CLOB, "Constructor" CLOB, "Chassis" CLOB, "Engine \\u2020" CLOB, "Tyre" CLOB, "Driver" CLOB, "Rounds" CLOB)

Which constructor makes the ej15 ej15b chassis?
SELECT "Constructor" FROM table_71456 WHERE "Chassis" = 'ej15 ej15b'
SELECT "Constructor" FROM "table_71456" WHERE "Chassis" = 'ej15 ej15b'