Question: When did the director of film Kaala Sona die?
Sentence (from "Ravikant Nagaich"): Ravikant Nagaich (5 July 1931 – 6 January 1991, in Chennai, Tamil Nadu) was an Indian film personality born at Atrauli, Aligarh, Uttar Pradesh, India in a Brahmin family.
Relevant evidence: Yes