premise: Many people are smiling as they gather in a room.
hypothesis: People are leaving a building.
explanation_1: People cannot gather in a room and leave the building at the same time
explanation_2: If people gather in a room, they are not leaving a building.
explanation_3: Gathering and leaving are opposite actions.
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.(Theme(e1,x2) & Actor(e1,x1) & v_leave(e1) & n_building(x2) & n_people(x1))
premise_sim: exists e1 p1 x1.(v_smile(e1) & n_thing(x1) & n_quantity(x1) & n_people(x1) & exists e2 x2.(v_gather(e2) & n_room(x2) & in(e2,x2) & Actor(e2,x1)) & as(e1,p1) & Actor(e1,x1))
hypothesis_sim: exists e1 x1 x2.(v_leave(e1) & n_people(x1) & n_building(x2) & Theme(e1,x2) & Actor(e1,x1))