278818
Production The film , which is based on the real lives of three men , with Fikret Portakal and Umut İlker playing themselves , was originally intended to be a documentary film , but after an extensive research period in Istanbul starting in 2006 , Özge along with director of photography Emre Erkmen got to know the main characters , who are working around the bridge , and decided to write a script based on the protagonists ' own stories .
 location: Istanbul
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: Istanbul 
Answer:
 location: Istanbul