premise: A middle-aged man in a bicycle race trying his hardest on the sand surrounded by watching crowd.
hypothesis: A man on a bicycle struggles as the comes to the end of a race.
explanation_1: It cannot be said it is the end of race for he trying hardest.
explanation_2: You can not infer he is at the end of the race.
explanation_3: Not everyone struggles during a race.
premise_logic: exists e2 e3 e1 s1 x1 x2 x3 x4 x5 x6 x7 x8.(n_sand(x6) & a_topic(x1) & in(x1,x2) & Theme(e3,x5) & Actor(e3,x4) & v_try(e3) & on(x5,x6) & by(e1,e2) & Theme(e2,x8) & Actor(e2,x7) & v_watch(e2) & n_crowd(x8) & Theme(e1,x7) & v_surround(e1) & (x6 = x7) & r_most(x5) & n_hardest(x5) & of(x5,x1) & n_male(x1) & (x2 = x4) & n_race(x2) & of(x2,x3) & n_bicycle(x3) & n_man(x1) & a_middle-aged(s1) & Theme(s1,x1))
hypothesis_logic: exists e1 p1 x1 x2 x4.(n_end(x4) & exists e2 x3 x5.(to(e2,x4) & of(x4,x5) & n_race(x5) & Actor(e2,x3) & v_come(e2) & n_the(x3)) & as(e1,p1) & Actor(e1,x1) & v_struggle(e1) & on(x1,x2) & n_bicycle(x2) & n_man(x1))