38059
This is the reason why Piaget 's theory of cognitive development was so influential for education , especially mathematics and science education .
 person: Piaget
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: location, person, organization 
Text: {0} 
 Entities: Piaget 
Answer:
 person: Piaget