Question: Which American actor, screenwriter, poet and singer died in 1999 and acted in Amok Time?
Sentence (from "DeForest Kelley"): Jackson DeForest Kelley (January 20, 1920 – June 11, 1999) was an American actor, screenwriter, poet and singer known for his roles in Westerns and as Dr. Leonard "Bones" McCoy of the USS "Enterprise" in the television and film series "Star Trek".
Relevant evidence: Yes