<|im_start|>user
Who won a gold medal alongside Waters in the coxed four?

Context:
A member of the Hamilton Rowing Club, Waters began rowing as a 17-year-old. In 1929 he was a member of the Hamilton four that won the national championship. In March of the following year, he participated in a trial race for selection of the New Zealand team to compete at the 1930 British Empire Games in Hamilton, Ontario, but was not initially chosen for the 12-man squad. However, he was included in the final squad selected in late June, and competed in both the men's eight and coxed four at the 1930 Empire Games. He won a gold medal in the coxed four, alongside Mick Brough, Jack Macdonald, Bert Sandos, and Arthur Eastwood (cox), and a silver medal in the eights, finishing three-quarters of a boat length behind the victorious English crew.<|im_end|>
<|im_start|>assistant
Mick Brough, Jack Macdonald, Bert Sandos, and Arthur Eastwood won a gold medal alongside Waters in the coxed four.<|im_end|>
