Question: When is the director of film Gaja Donga 's birthday?
Sentence (from "K. Raghavendra Rao"): K. Raghavendra Rao (born Kovelamudi Raghavendra Rao on 23 May 1942) is an Indian film director, producer, screenwriter and choreographer, known for his works predominantly in Telugu cinema and a few Hindi and Kannada films.
Relevant evidence: Yes