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The band has had multiple line-up changes , but Nigel Olsson , Davey Johnstone , and Ray Cooper have been members ( albeit not continuously ) since 1969 , 1971 and 1974 respectively .
 person: Nigel Olsson; person: Davey Johnstone; person: Ray Cooper
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: Nigel Olsson; person: Davey Johnstone; person: Ray Cooper