Premise: Leonard Simon Nimoy ( ; March 26, 1931 – February 27, 2015) was an American actor, film director, photographer, author, singer and songwriter. He was best known for his role as Spock of the "Star Trek" franchise, a character he portrayed in television and film from shot in late 1964 to his final film performance in 2013.
Hypothesis: Leonard Nimoy was best known for his role of Spock, he first starred in that role in 1931