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.

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. 
undermine

claim: The US intervention in Libya, lacking congressional approval, was illegal.
 perspective: The intervention in Libya is a complete disaster.
support

claim: Bottled water should be banned.
 perspective: Bottled water is a practical emergency water supply. 

undermine

