question: how much did 700 tons of saltpetre go for in the contract negotiated by Banks in 1673
answer: # 37,000
turker_answer: 700 tons of saltpetre went for # 37,000 in the contract negotiated by Banks in 1673 .
rule-based: 700 tons of saltpetre went for # 37,000 in the contract negotiated by Banks in 1673