Question: In the 2008 SAP Open-Singles, the defending champion was what British professional tennis player who is a three-time Grand Slam tournament winner?
Sentence (from "Andy Murray"): Sir Andrew Barron Murray, {'1': ", '2': ", '3': ", '4': "} (born 15 May 1987) is a British professional tennis player from Scotland currently ranked world no. 3 in men's singles.
Relevant evidence: Yes