premise: Taller runner in orange and smaller one in blue run side by side around track in crowded stadium.
hypothesis: The two people are competing in a marathon.
explanation_1: Running next to one another does not imply competing. They could be practicing or warming up. Running on a track implies nothing about the length of the run, marathon or otherwise.
explanation_2: Just because a taller and smaller runner run side by side around a stadium it does not mean they are competing in a marathon.
explanation_3: A tall an short person running doesn't mean they are competing in a marathon
premise_logic: exists e1 s1 s2 s3 x1 x2 x3 x4 x5 x6 x7 x8 x9.(in(e1,x9) & n_stadium(x9) & a_crowded(s3) & Theme(s3,x9) & by(e1,x7) & around(x7,x8) & n_track(x8) & n_side(x7) & Actor(e1,x1) & v_side(e1) & subset_of(x5,x1) & in(x5,x6) & n_run(x6) & a_blue(s2) & Theme(s2,x6) & n_thing(x5) & card_eq_1(x5) & r_more(s1) & a_smaller(s1) & Theme(s1,x5) & subset_of(x2,x1) & in(x2,x4) & n_orange(x4) & n_runner(x2) & (x2 = x3) & ne_nam_taller(x3))
hypothesis_logic: exists e1 x1 x2.(n_people(x1) & card_eq_2(x1) & in(e1,x2) & n_marathon(x2) & Actor(e1,x1) & v_compete(e1))