Please answer the following question: - sport is rowing    - caption is ernst championships veenemans and steven blaisse at the 1964 european    - height is 1.84 m ftin on      - club is nereus , amsterdam    - birth date is 18 march 1940    - weight is 72 kg lb on    - image size is 300px    - image is ernst veenemans and steven blaisse 1964.jpg    - birth place is haarlem , the netherlands    Given the details above, guess who could this information be about.
Answer:
ernst veenemans