Who defeated Kaiserslautern  in the 1971–72 DFB-Pokal?
1971–72 DFB-Pokal: The 1971–72 DFB-Pokal was the 29th season of the annual German football cup competition. FC Schalke 04:  The "04" in the club's name derives from its formation in 1904.
i don't know