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 was the main singing star in the musical Half a Sixpence?
answer:
tommy steele

question:
The sixth and first strings of a guitar are tuned to which note?
answer:
e

question:
Henry VIII married Anne of Cleves after seeing a (presumably, too) flattering portrait of her by whom?
answer:
hans holbein