premise: Racers are just beginning a race in an international competition.
hypothesis: people are running.
explanation_1: People are Racers and an international competition requires running.
explanation_2: Racers are people.  If they are beginning a race , then we can infer they are running.
explanation_3: Racers are known to participate in running events.
premise_logic: exists e1 s1 s2 x1 x2 x3.(a_just(s2) & Manner(e1,s2) & in(e1,x3) & n_competition(x3) & a_international(s1) & Theme(s1,x3) & Theme(e1,x2) & Actor(e1,x1) & v_begin(e1) & n_race(x2) & n_racer(x1))
hypothesis_logic: exists e1 x1.(Actor(e1,x1) & v_run(e1) & n_people(x1))