Read the bio below and try to give details on heinrich ziegler 's:    - name       - sport     - birth date     Bio: heinrich ziegler -lrb- born 31 august 1891 , date of death unknown -rrb- was a german fencer . he competed in the individual foil and team épée events at the 1912 summer olympics .
A:
- name is heinrich ziegler- sport is fencing- birth date is 31 august 1891