premise: A man at the beach, building a sand castle.
hypothesis: The waves have torn down a sand castle that the man is standing near.
explanation_1: The man was either standing near, or building a sand castle, but it can't be both.
explanation_2: The man can't be building the sandcastle if it is being torn down.
explanation_3: Building a sand castle implies the castle hasn't been torn down.
premise_logic: exists e1 x1 x2 x3 x4 x5.(n_beach(x2) & a_topic(x1) & Theme(e1,x4) & Actor(e1,x3) & v_build(e1) & n_castle(x4) & of(x4,x5) & n_sand(x5) & (x1 = x3) & at(x1,x2) & n_man(x1))
hypothesis_logic: exists e1 p1 s1 x1 x2 x3 x4.(n_man(x4) & n_wave(x1) & a_down(s1) & Manner(e1,s1) & Theme(e1,x2) & Actor(e1,x1) & v_tear(e1) & Topic(x2,p1) & exists e2 p2.(exists s2.(Theme(s2,x4) & a_near(s2)) & Topic(e2,p2) & Actor(e2,x4) & v_stand(e2)) & n_castle(x2) & of(x2,x3) & n_sand(x3))