premise: A boy in a blue life jacket jumps off a board into the lake.
hypothesis: The boy is happy
explanation_1: Just because a boy is jumping into a lake does not mean he his happy.
explanation_2: It cannot be assumed that the boy is happy.
explanation_3: A boy in a life jacket jumping into the lake doesn't necessarily mean that he's happy.
premise_logic: exists e1 s1 s2 x1 x2 x3 x4 x5.(n_lake(x5) & into(e1,x5) & a_off(s2) & Manner(e1,s2) & Theme(e1,x4) & Actor(e1,x1) & v_jump(e1) & n_board(x4) & in(x1,x2) & n_jacket(x2) & of(x2,x3) & n_life(x3) & a_blue(s1) & Theme(s1,x2) & n_boy(x1))
hypothesis_logic: exists s1 x1.(n_boy(x1) & Theme(s1,x1) & a_happy(s1))