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Clear title to the land did not occur until 1873 , when a U.S. District Court upheld Burnett 's purchase against a suit filed by Avila heir Tomas Avila Sanchez .
 person: Avila; person: Tomas Avila Sanchez
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: Avila, Tomas Avila Sanchez 
Answer:
 person: Avila; person: Tomas Avila Sanchez