Question: Mathew Stuart Sinclair (born 9 November 1975) is an Australian-born New Zealand cricketer, he holds the equal world record for the highest Test score (214) by a number three batsman on debut when he opened his international career against West Indies in the 1999, Boxing Day Test match is a cricket Test match held in Melbourne, Victoria in which country?
{'answer': 'Australia', 'supporting_facts': [['Mathew Sinclair', 2], ['Boxing Day Test', 0]]}