premise: A girl in a child's swimming pool.
hypothesis: A girl playing water polo in the pool.
explanation_1: We have no idea if the girl is playing water polo or what she is doing. You can do many things in a pool.
explanation_2: You can be in a pool and not play water polo.
explanation_3: Just because a girl in a child's swimming pool does not mean they are playing water polo.
premise_logic: exists x1 x2 x3 x4.(a_topic(x1) & in(x1,x3) & n_pool(x3) & of(x3,x4) & n_swimming(x4) & of(x3,x2) & n_child(x2) & n_girl(x1))
hypothesis_logic: exists e1 x1 x2 x3 x4 x5.(n_pool(x5) & a_topic(x1) & in(e1,x5) & Theme(e1,x3) & Actor(e1,x2) & v_play(e1) & n_polo(x3) & of(x3,x4) & n_water(x4) & (x1 = x2) & n_girl(x1))