66780
In the late 1460s when tensions arose between his cousin Warwick and Edward IV Thomas sided with his cousin .
 person: Warwick; person: Edward IV
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: Warwick, Edward IV 
Answer:
 person: Warwick; person: Edward IV