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Biography Born in Barnstaple to a family of actors , British motion picture director Walter Summers began his career in the family trade ; his first contact with filmmaking was as an assistant to American director George Loane Tucker , who worked for the English London Films unit from 1914 to 1916 .
 person: Walter Summers
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: Walter Summers 
Answer:
 person: Walter Summers