What key details about zdenek vavra can be extracted from the following bio? Bio: zdenek vavra -lrb- born 1891 , date of death unknown -rrb- was an olympic fencer who competed for bohemia in 1912 and czechoslovakia in 1920 .
The answer to this question is:
- name is zdenek vavra- sport is fencing- birth date is 1891