<prompt> Hetty Balkenende kuru Hettie lan bowotǝna, saa 1939 shima freestyle-a kuru synchronized-a kǝrmabe Netherlandsbe wo, shiye medal arzibe fannu 4×100 m freestyle relaybe suro 1954 European Aquatics Championships lan gowono  <response>: kǝla kǝnǝngabe. Suro saa 1955 lan, shiye banazǝna jami Netherlandsbe dǝga duno dunyabe dawarzana ro suro awo fal dǝyen; shiye kuru kazadala lardǝbe indi 100 m-a 400 m-a sǝdǝna, kazadala lardǝbe indi suro 400 m-a, kuru kazadala dunyabe suro 880 yards-a samma suro saa falyen. 