Rishi Kapoor
Rishi Kapoor (born 4 September 1952) is an Indian actor, director and producer known for his work in Hindi cinema.
He received the National Film Award for his debut role as a child artist in his father Raj Kapoor's 1970 film "Mera Naam Joker" (1970).
Kapoor had his first lead role as an adult opposite Dimple Kapadia in 1973 with the film "Bobby" and received the Filmfare Best Actor Award in 1974.
Subsequently, he played leading roles as the romantic lead in 92 films between 1973 and 2000, 41 of which were multi-starrer films.
Only 11 of his 51 solo hero films were successful.
For his performance in "Do Dooni Chaar", he won the Filmfare Critics Award for Best Actor in 2011, and for his role in "Kapoor & Sons", he won the Filmfare Award for Best Supporting Actor in 2017.
He was honoured with the Filmfare Lifetime Achievement Award in 2008.
He appeared opposite his future wife Neetu Singh in twelve films from 1973 and 1981.
Prithvipati Shah
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He was the grandfather of Nara Bhupal Shah.
Raj Kapoor
Raj Kapoor (14 December 1924 – 2 June 1988) was an Indian film actor, producer and director of Indian cinema.
Born at Kapoor Haveli in Peshawar to actor Prithviraj Kapoor
he was a member of the Kapoor family which has produced several Bollywood superstars.
Kapoor is regarded as one of the greatest and most influential actors and filmmakers in the history of Hindi cinema.
He received multiple accolades, including 3 National Film Awards and 11 Filmfare Awards in India.
The Filmfare Lifetime Achievement Award is named after Raj Kapoor.
He was a two-time nominee for the Palme d'Or grand prize at the Cannes Film Festival for his films
"Awaara" (1951) and "Boot Polish" (1954).
His performance in "Awaara" was ranked as one of the top ten greatest performances of all time by "Time" magazine.
His films attracted worldwide audiences, particularly in Asia and Europe.
He was called "the Clark Gable of the Indian film industry".
The Government of India honoured him with the Padma Bhushan in 1971 for his contributions to the arts.
India's highest award in cinema, the Dadasaheb Phalke Award, was bestowed on him in 1987 by the Government of India.
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Lyon Cohen
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He was the grandfather of singer/ poet Leonard Cohen.
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He was the Grandfather of industrialist Paul Wittouck.
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Fujiwara no Nagara
, also known as Fujiwara no Nagayoshi, was a Japanese statesman, courtier and politician of the early Heian period.
He was the grandfather of Emperor Yōzei.

Question: Who is Rishi Kapoor's paternal grandfather?
Answer: Prithviraj Kapoor