7257
He became world champion in the 4 × 200 " m freestyle alongside Pieter van den Hoogenband , Johan Kenkhuis and Martijn Zuijdweg .
 person: Pieter van den Hoogenband; person: Johan Kenkhuis; person: Martijn Zuijdweg
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: media, plant, vehicle, astronomical object, time, disease, animal, location, person, organization, mythical figure, food, biology, geographical phenomenon, instrument, event 
Text: {0} 
Answer:
 person: Pieter van den Hoogenband; person: Johan Kenkhuis; person: Martijn Zuijdweg