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Cameraman Gary Graver used to work for horror filmmaker Al Adamson back in the early 1970 s .
 person: Gary Graver; person: Al Adamson
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 person: Gary Graver; person: Al Adamson