42597
Cellar holes have been filled near the center of what was once Prescott to accommodate the former Five College Radio Astronomy Observatory , once operated by the University of Massachusetts Amherst .
 Prescott, Five College Radio Astronomy Observatory, University of Massachusetts Amherst
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Prescott, Five College Radio Astronomy Observatory, University of Massachusetts Amherst