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Although he died in 1971 , it was not until the mid-1980 s that his true birth date , August 4 , 1901 , was discovered by Tad Jones by researching baptismal records .
 person: Tad Jones
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: Tad Jones 
Answer:
 person: Tad Jones