premise: Three adult bystanders and one child looking up toward the sky while standing on the sidewalk.
hypothesis: A man and his three children watch the helium balloons float higher in the air.
explanation_1: On the first sentence there are three adults while on the second sentence there are three children.
explanation_2: One group has three children, the other one child. These can't be the same group.
explanation_3: There are either three adults or three children.
premise_logic: exists e2 e1 s1 x1 x2 x3 x4 x5 x6.(n_sidewalk(x6) & n_sky(x5) & while(e1,e2) & on(e2,x6) & Actor(e2,x1) & v_stand(e2) & a_up(s1) & Manner(e1,s1) & toward(e1,x5) & Actor(e1,x1) & v_look(e1) & n_child(x3) & card_eq_1(x3) & n_bystander(x2) & of(x2,x4) & n_adult(x4) & card_eq_3(x2) & subset_of(x3,x1) & subset_of(x2,x1))
hypothesis_logic: exists e2 e1 p1 x1 x2 x3 x4 x5 x6 x7.(n_air(x7) & n_balloon(x4) & of(x4,x5) & n_helium(x5) & Theme(e2,x4) & Actor(e2,x1) & v_watch(e2) & in(e1,x7) & exists s1.(r_more(s1) & Theme(s1,x6) & a_higher(s1)) & Topic(e1,p1) & Actor(e1,x6) & v_float(e1) & (x4 = x6) & subset_of(x3,x1) & n_child(x3) & card_eq_3(x3) & of(x3,x2) & n_male(x2) & subset_of(x2,x1) & n_man(x2))