Question: Which actor in Pati Patni Aur Woh, received the National Film Award for his debut role as a child artist in his father Raj Kapoor's 1970 film "Mera Naam Joker"?
Sentence (from "Pati Patni Aur Woh"): The film stars Sanjeev Kumar, Vidya Sinha, Ranjeeta Kaur, and in guest appearances Rishi Kapoor, Neetu Singh and Parveen Babi.
Relevant evidence: Yes