Dee ihe ọzọ maka paragraf a - Greetje Kraan (mgbe ụfọdụ a na-ede ya na-ezighi ezi dị ka Geertje) bụ onye bụbu onye na-egwu mmiri Dutch. Dị ka akụkụ nke ndị otu mba, o meriri asọmpi egwuregwu mmiri nke Europe na 1958
na 4 × 100 m freestyle relay ma mebie ndekọ ụwa abụọ na 4 × 100 m medley relay (1956 na 1957). N'afọ 1957, o setịpụkwara ihe ndekọ Europe na 100 m freestyle (25 m ọdọ mmiri).