premise: A young african boy skipping rocks.
hypothesis: There's a young boy with rocks in hand.
explanation_1: A boy skipping rocks has rocks in his hand.
explanation_2: Skipping rocks implies having them in hand.
explanation_3: A boy skipping rocks has rocks in his hand.
premise_logic: exists e1 s1 s2 x1 x2 x3.(a_topic(x1) & Theme(e1,x3) & Actor(e1,x2) & v_skip(e1) & n_rock(x3) & (x1 = x2) & n_boy(x1) & a_african(s2) & Theme(s2,x1) & a_young(s1) & Theme(s1,x1))
hypothesis_logic: exists p1 x1 x2.(in(p1,x2) & n_hand(x2) & exists s1 x3 x4.((x1 = x3) & with(x3,x4) & n_rock(x4) & n_boy(x3) & a_young(s1) & Theme(s1,x3)))