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During his childhood , he developed a close relationship with his grandparents , Norodom Suramarit and Sisowath Kossamak , but was distanced from his father .
 person: Norodom Suramarit; person: Sisowath Kossamak
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 person: Norodom Suramarit; person: Sisowath Kossamak