43597
Gavin & Terry are tired of this boredom and the terrible taste of boots , they visit and later join Professor Shoe , who has built a special helicopter-boot ' Welly Copter ' to travel to distant lands and adventures .
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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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