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:
In the Shakespeare play 'Macbeth', which character carries Macbeth's head on stage?
answer:
macduff

question:
Which former 'Have I Got News For You' presenter made an occassional appearance as Patrick in 'One Foot In The Grave'?
answer:
angus deayton

question:
Which cover of an Elvis song gave the Pet Shop Boys a number one in 1987?
answer:
always on my mind