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