One Possible Reasoning ·Guessing that“Bill is from Boston'"is Bill,Jim and Sam are from Boston,Chicago and Detroit, respectively true,then Jim is NOT from Chicago Bill is from Boston,if and only if Jim is NOT from Chicago. ·Jim is NOT from Boston Jim is from Chicago,if and only if Bill is NOT from Boston. 。Bill is from Detroit CONFLICT 日 Sam is from Boston,if and only if Bill is NOT from Chicago. Bill is from Chicago,if and only if Sam is NOT from Boston. So the guessing is wrong,and Jim is from Boston,if and only if Bill is NOT from Detroit. .Bill is from Detroit,if and only if Jim is NOT from Boston. ·Jim is from Chicago ·Bill is from Detroit ·Sam is from BostonOne Possible Reasoning • Guessing that “Bill is from Boston” is true, then • Jim is NOT from Chicago • Jim is NOT from Boston • Bill is from Detroit • So the guessing is wrong, and • Jim is from Chicago • Bill is from Detroit • Sam is from Boston • Bill, Jim and Sam are from Boston, Chicago and Detroit, respectively • Bill is from Boston, if and only if Jim is NOT from Chicago. • Jim is from Chicago, if and only if Bill is NOT from Boston. • Sam is from Boston, if and only if Bill is NOT from Chicago. • Bill is from Chicago, if and only if Sam is NOT from Boston. • Jim is from Boston, if and only if Bill is NOT from Detroit. • Bill is from Detroit, if and only if Jim is NOT from Boston