premise: A group of four boys plays with mud in the water and grass.
hypothesis: Boys are getting their clothes dirty.
explanation_1: Boys doesn't imply exactly four boys.  Just because they are playing in mud, doesn't imply they will get their clothes dirty.
premise_logic: exists e1 x1 x2 x3 x4 x5 x6.(n_water(x5) & with(e1,x3) & subset_of(x6,x3) & n_grass(x6) & subset_of(x4,x3) & in(x4,x5) & n_mud(x4) & Actor(e1,x1) & v_play(e1) & of(x1,x2) & n_boy(x2) & card_eq_4(x2) & n_group(x1))
hypothesis_logic: exists e1 x1 x2 x3.(Theme(e1,x2) & Actor(e1,x1) & v_get(e1) & n_dirty(x2) & of(x2,x3) & n_clothes(x3) & of(x2,x1) & n_thing(x1) & n_boy(x1))
premise_sim: exists e1 x1 x2 x3 x4 x5 x6.(with(e1,x3) & v_play(e1) & subset_of(x6,x3) & subset_of(x4,x3) & of(x1,x2) & n_water(x5) & n_mud(x4) & n_group(x1) & n_grass(x6) & n_boy(x2) & in(x4,x5) & card_eq_4(x2) & Actor(e1,x1))
hypothesis_sim: exists e1 x1 x2 x3.(v_get(e1) & of(x2,x3) & of(x2,x1) & n_thing(x1) & n_dirty(x2) & n_clothes(x3) & n_boy(x1) & Theme(e1,x2) & Actor(e1,x1))