8862
In 1975 , Deep Purple guitarist Ritchie Blackmore founded the band Rainbow and hired Dio to be his lead singer ; during his tenure , the band released three studio albums .
 organization: Deep Purple; person: Ritchie Blackmore; organization: Rainbow; organization: Dio
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: location, person, organization 
Text: {0} 
 Entities: Deep Purple, Ritchie Blackmore, Rainbow, Dio 
Answer:
 organization: Deep Purple; person: Ritchie Blackmore; organization: Rainbow; organization: Dio