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This was his first collaboration with Steven Spielberg , who later co-produced " Flags of Our Fathers " and " Letters from Iwo Jima " .
 person: Steven Spielberg
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 person: Steven Spielberg