premise: Many people are smiling as they gather in a room.
hypothesis: People are waiting for a surprise party.
explanation_1: Just because people are gathering in a room doesn't imply they are waiting for a surprise party.
explanation_2: People could be smiling for many reasons, not always a surprise party. They also might gather for dinner not a party or not to be waiting.
explanation_3: Not all people gathering in a room are waiting for a party.
premise_logic: exists e1 p1 x1.(exists e2 x2.(in(e2,x2) & n_room(x2) & Actor(e2,x1) & v_gather(e2)) & n_thing(x1) & as(e1,p1) & Actor(e1,x1) & v_smile(e1) & n_people(x1) & n_quantity(x1))
hypothesis_logic: exists e1 x1 x2 x3.(for(e1,x2) & n_party(x2) & of(x2,x3) & n_surprise(x3) & Actor(e1,x1) & v_wait(e1) & n_people(x1))