premise: The little boy is in the park near a duck.
hypothesis: The boy fell in the water on the duck.
explanation_1: The boy is either in park, or he fell in the water, and he is either near a duck or on the duck.
explanation_2: He can't be near a duck and on it at the same time. He could be near a duck and then fall on top of it.
explanation_3: A boy would either have to be in the park or in the water.
premise_logic: exists p1 s1 x1 x2.(n_park(x2) & n_boy(x1) & a_little(s1) & Theme(s1,x1) & exists x3.(in(x1,x2) & near(x2,x3) & n_duck(x3)))
hypothesis_logic: exists e1 x1 x2 x3.(n_duck(x3) & n_water(x2) & n_boy(x1) & on(e1,x3) & in(e1,x2) & Actor(e1,x1) & v_fall(e1))