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XTC 's Dave Gregory recalls seeing bands using Mellotrons when growing up in the 1970 s , and thought it would be an interesting addition to the group 's sound .
 organization: XTC; person: Dave Gregory
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: media, plant, vehicle, astronomical object, time, disease, animal, location, person, organization, mythical figure, food, biology, geographical phenomenon, instrument, event 
Text: {0} 
Answer:
 organization: XTC; person: Dave Gregory