question: Why did the US not send in ground troops after the United Nations approved the use of force ?
answer: advisers believed the North Koreans could be stopped by air and naval power
turker_answer: The US did not send in ground troops after the United Nations approved the use of force because advisers believed the North Koreans could be stopped by air and naval power .
rule-based: The US did not send in ground troops after the United Nations approved the use of force because advisers believed the North Koreans could be stopped by air and naval power .