instruction:
Given an trivia question precisely answer the question with a word/phrase/name. External resources such as Wikipedia could be used to obtain the facts.
question:
Who played the title role the ITV series Ivanhoe, first broadcast in 1958?
answer:
roger moore

question:
The islands of Hoy, Sanday and Westray belong to which island group?
answer:
orkney

question:
According to Malory and Tennyson who was the son of Lancelot and Elaine, raised by nuns and knighted on his arrival at Camelot?
answer:
galahad