premise: A boy cooking on a grill.
hypothesis: A grill which a boy is cooking on.
explanation_1: cooking on is the same as cooking on
explanation_2: cooking on a grill is inferred as cooking on.
explanation_3: If a boy is cooking on a grill then a grill is that which a boy is cooking on.
premise_logic: exists x1 x2 x3.(a_topic(x1) & on(x1,x3) & n_grill(x3) & n_cooking(x1) & of(x1,x2) & n_boy(x2))
hypothesis_logic: exists e1 x1 x2 x3.(a_topic(x1) & on(e1,x3) & (x1 = x3) & Actor(e1,x2) & v_cook(e1) & n_boy(x2) & n_grill(x1))