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Elizabeth Percy married firstly John Clifford , 7th Baron de Clifford , slain at the Siege of Meaux on 13 March 1422 .
 person: Elizabeth Percy; person: John Clifford , 7th Baron de Clifford
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: Elizabeth Percy, John Clifford , 7th Baron de Clifford 
Answer:
 person: Elizabeth Percy; person: John Clifford , 7th Baron de Clifford