Question: What is the date of birth of P. V. Ranga Rao's father?
Sentence (from "P. V. Narasimha Rao"): Pamulaparthi Venkata Narasimha Rao (28 June 1921 – 23 December 2004) was an Indian lawyer and politician who served as the 9th Prime Minister of India from 1991 to 1996.
Relevant evidence: Yes