Given the question: What key details about volker knappheide  can be extracted from the following bio?  Bio: volker knappheide -lrb- born 28 march 1966 -rrb- is a retired german football midfielder .
The answer is:
- clubs is schwarz-weiss essen vfl bochum- caps is 7- position is midfielder- years is 0000 -- 1984 1985 -- 1987- youthclubs is schwarz-weiss essen- youthyears is 0000 -- 1984- birth date is 28 march 1966- fullname is volker knappheide- name is volker knappheide- birth place is essen , west germany- goals is 1