370697
His second Greenaway Medal winner , Mr Gumpy 's Outing ( 1970 ) , is his work most widely held in WorldCat participating libraries , and it also won the annual Boston Globe – Horn Book Award ( U.S. ) in the picture books category .
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Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
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