premise: A man standing up in a rowboat with a bird perched on the boat.
hypothesis: The man is pedaling a bicycle along the pier.
explanation_1: the man can't be standing up in the boat rowing if he's on a bike pedaling.
explanation_2: One cannot stand in a rowboat and pedal a bicycle simultaneously.
explanation_3: If the man is standing up in a rowboat, then he is not pedaling a bicycle.
premise_logic: exists e1 e2 s1 x1 x2 x3 x4 x5 x6.(n_boat(x6) & a_topic(x1) & with(e1,x4) & on(e2,x6) & Theme(e2,x5) & v_perch(e2) & (x4 = x5) & n_bird(x4) & in(e1,x3) & n_rowboat(x3) & a_up(s1) & Manner(e1,s1) & Actor(e1,x2) & v_stand(e1) & (x1 = x2) & n_man(x1))
hypothesis_logic: exists e1 x1 x2 x3.(n_pier(x3) & n_man(x1) & Theme(e1,x2) & Actor(e1,x1) & v_pedal(e1) & along(x2,x3) & n_bicycle(x2))