257092
From 1926 to 1931 he studied piano and composition with Bernhard van den Sigtenhorst Meyer , and from 1933 to 1938 with Willem Pijper .
 Willem Pijper
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Willem Pijper