AnswerEX-b3
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enjoy watching football togehter(Alice,Tom) = true,
because
I(Alice) = {Alice},
I(Tom) = {Tom}
and
<Alice,Tom> is a set of I(enjoy football together)
enjoy watching football togehter(Alice,Tom) = true,
because
I(Alice) = {Alice},
I(Tom) = {Tom}
and
<Alice,Tom> is a set of I(enjoy football together)