Given the question: Read the bio below and try to give details on rolf beab 's:    - sport       - birth date     - club     - birth place     Bio: rolf beab -lrb- born 4 january 1964 -rrb- is a retired german breaststroke swimmer who won one gold and one silver medal at the 1985 european aquatics championships . between 1985 and 1988 he won four national titles in the 50 m and 100 m breaststroke events . he is married to susan ; they have a son , denis -lrb- b. 1984 -rrb- .
The answer is:
- sport is swimming- birth date is 4 january 1964- club is dormagen- birth place is helmstedt , germany