premise: A party is held and many people mingle and gather for the occasion.
hypothesis: Many friends are socializing at a birthday party.
explanation_1: it's not a birthday party
explanation_2: Just because a party is held and many people mingle and gather for the occasion, doesn't mean they are socializing at a birthday party.
explanation_3: Not all occasion is a birthday party.
premise_logic: exists e3 e1 e2 x1 x2 x3 x4.(n_occasion(x4) & for(e3,x4) & Actor(e3,x3) & v_gather(e3) & n_people(x3) & n_quantity(x3) & Actor(e2,x2) & v_mingle(e2) & n_people(x2) & n_quantity(x2) & Theme(e1,x1) & v_hold(e1) & n_party(x1))
hypothesis_logic: exists e1 x1 x2 x3.(at(e1,x2) & n_party(x2) & of(x2,x3) & n_birthday(x3) & Actor(e1,x1) & v_socialize(e1) & n_friend(x1) & n_quantity(x1))