<prompt> Hetty Balkenende anonziwo Hettie, akaberekwa muna 1939 aimbova mutambi wekushambira akasununguka uye mutambi wekushambira akabatana kubva kuNetherlands uyo akahwina menduru yesirivheri mu4 × 100 m freestyle relay pa1954 European Aquatics Championships  <response>: . Muna 1955, akabatsira timu yeDutch kuisa rekodhi repasi rose muchiitiko chimwe chete; akakundawo mazita maviri emunyika 100 m uye 400 m freestyle, akaputsa zvinyorwa zviviri zvemunyika mumamita mazana mana akasununguka, uye rekodhi renyika pamakumbo mazana masere nemakumi masere zvose mugore rimwe chete. 