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Following the club 's 1987 training camp , he and Craig Billington were sent to their AHL affiliate , the Maine Mariners , while Karl Friesen and Chris Terreri were chosen to backup Alain Chevrier .
 Craig Billington, AHL, Maine Mariners, Karl Friesen, Chris Terreri, Alain Chevrier
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Craig Billington, AHL, Maine Mariners, Karl Friesen, Chris Terreri, Alain Chevrier