premise: A little boy smiles while playing in the dirt.
hypothesis: A human smiling.
explanation_1: Boys are human, therefore when a boy smiles, a human is smiling.
explanation_2: A little boy is a human and he smiles.
explanation_3: A boy is a type of human.
premise_logic: exists e1 e2 s1 x1 x2.(n_dirt(x2) & while(e1,e2) & in(e2,x2) & Actor(e2,x1) & v_play(e2) & Actor(e1,x1) & v_smile(e1) & n_boy(x1) & a_little(s1) & Theme(s1,x1))
hypothesis_logic: exists s1 x1.(a_topic(x1) & n_smiling(x1) & a_human(s1) & Theme(s1,x1))