premise: A couple sit on a park bench with purple balloons tied to it.
hypothesis: People at a birthday party.
explanation_1: Just because there are purple balloons at tied to a bench doesn't mean the people are at a birthday party.
explanation_2: The couple is not at a birthday party, it could be valentines day.
explanation_3: Bench with purple balloons does not necessarily mean they are at a birthday party.
premise_logic: exists e1 e2 s1 x1 x2 x3 x4 x5.(with(e1,x4) & to(e2,x1) & n_thing(x1) & Theme(e2,x5) & v_tie(e2) & (x4 = x5) & n_balloon(x4) & a_purple(s1) & Theme(s1,x4) & on(e1,x2) & n_bench(x2) & of(x2,x3) & n_park(x3) & Actor(e1,x1) & v_sit(e1) & n_couple(x1))
hypothesis_logic: exists x1 x2 x3.(a_topic(x1) & at(x1,x2) & n_party(x2) & of(x2,x3) & n_birthday(x3) & n_people(x1))
premise_sim: exists e1 e2 s1 x1 x2 x3 x4 x5.(with(e1,x4) & v_tie(e2) & v_sit(e1) & to(e2,x1) & on(e1,x2) & of(x2,x3) & n_thing(x1) & n_park(x3) & n_couple(x1) & n_bench(x2) & n_balloon(x4) & a_purple(s1) & Theme(s1,x4) & Theme(e2,x5) & Actor(e1,x1) & (x4 = x5))
hypothesis_sim: exists x1 x2 x3.(of(x2,x3) & n_people(x1) & n_party(x2) & n_birthday(x3) & at(x1,x2) & a_topic(x1))