Task: Explanation
Input (English): PK is a 2014 Indian satirical science fiction comedy film. The film was directed by Rajkumar Hirani, produced by Hirani and Vidhu Vinod Chopra, and written by Hirani and Abhijat Joshi. The film stars Aamir Khan in the title role with Anushka Sharma, Sushant Singh Rajput, Boman Irani, Saurabh Shukla, and Sanjay Dutt in supporting roles. It tells the story of an alien who comes to Earth on a research mission. He befriends a television journalist and questions religious dogmas and superstitions. Question: Who was the director of the 2014 sci fi comedy film which features the romantic Hindi song Chaar Kadam? Answer: Rajkumar Hirani
Output (English):  The film was directed by Rajkumar Hirani, produced by Hirani and Vidhu Vinod Chopra, and written by Hirani and Abhijat Joshi.