In this task you will be given a claim and a perspective. You should determine whether that perspective supports or undermines the claim. If the perspective could possibly convince someone with different view, it is supporting, otherwise it is undermining.

[Q]: claim: Joe Calzaghe deserves to be recognized as one of the greatest boxers of all time.
 perspective: I disagree.  Four of his five good fights were his oppenents best fights. 
[A]: undermine


[Q]: claim: permit the use of performance enhancing drugs in professional sports.
 perspective: Sports is about competing on a level playing field and allowing drugs will ruin that.
[A]: undermine


[Q]: claim: Build a third Heathrow runway to maintain its position as a hub airport.
 perspective: The third run way would not be good
[A]:
undermine