premise: Toddler sits on a pile of rocks.
hypothesis: The toddler is playing in the rock garden.
explanation_1: Just because the toddler is sitting on rocks, it doesn't mean he is playing.  Also rocks can be found anywhere, not necessarily in a rock garden.
premise_logic: exists e1 x1 x2 x3.(ne_nam_toddler(x1) & on(e1,x2) & of(x2,x3) & n_rock(x3) & n_pile(x2) & Actor(e1,x1) & v_sit(e1))
hypothesis_logic: exists e1 x1 x2 x3.(n_garden(x2) & of(x2,x3) & n_rock(x3) & n_toddler(x1) & in(e1,x2) & Actor(e1,x1) & v_play(e1))
premise_sim: exists e1 x1 x2 x3.(v_sit(e1) & on(e1,x2) & of(x2,x3) & ne_nam_toddler(x1) & n_rock(x3) & n_pile(x2) & Actor(e1,x1))
hypothesis_sim: exists e1 x1 x2 x3.(v_play(e1) & of(x2,x3) & n_toddler(x1) & n_rock(x3) & n_garden(x2) & in(e1,x2) & Actor(e1,x1))