premise: A man running a marathon talks to his friend.
hypothesis: There are people canoeing down a river.
explanation_1: One cannot run a marathon and be canoeing at the same time.
explanation_2: One man in first sentence people in second sentence.
explanation_3: A man cannot run while canoeing.
premise_logic: exists e1 x1 x2 x3 x4 x5.(a_topic(x1) & Theme(e1,x3) & Actor(e1,x2) & v_run(e1) & to(x3,x5) & n_friend(x5) & of(x5,x1) & n_male(x1) & n_talk(x3) & of(x3,x4) & n_marathon(x4) & (x1 = x2) & n_man(x1))
hypothesis_logic: exists p1 x1 e1 s1 x2 x3 x4.((x1 = x2) & a_down(s1) & Manner(e1,s1) & Theme(e1,x4) & Actor(e1,x3) & v_canoe(e1) & n_river(x4) & (x2 = x3) & n_people(x2))