premise: Several bicyclers are carrying their bikes up a grassy hill.
hypothesis: Bikers racing downhill.
explanation_1: The bikers cannot be carrying their bikes uphill and racing downhill at the same time.
explanation_2: carrying doesn't mean racing
explanation_3: He refers to them as carrying their bikes up a hill so they cant be racing downhill simultaneously.
premise_logic: exists e1 s1 s2 x1 x2 x3.(Theme(e1,x2) & Actor(e1,x1) & v_carry(e1) & up(x2,x3) & n_hill(x3) & a_grassy(s2) & Theme(s2,x3) & n_bike(x2) & of(x2,x1) & n_thing(x1) & n_bicycler(x1) & a_several(s1) & Theme(s1,x1))
hypothesis_logic: exists e1 x1 x2 x3.(a_topic(x1) & Theme(e1,x3) & Actor(e1,x2) & v_race(e1) & n_downhill(x3) & (x1 = x2) & n_biker(x1))
premise_sim: exists e1 s1 s2 x1 x2 x3.(v_carry(e1) & up(x2,x3) & of(x2,x1) & n_thing(x1) & n_hill(x3) & n_bike(x2) & n_bicycler(x1) & a_several(s1) & a_grassy(s2) & Theme(s2,x3) & Theme(s1,x1) & Theme(e1,x2) & Actor(e1,x1))
hypothesis_sim: exists e1 x1 x2 x3.(v_race(e1) & n_downhill(x3) & n_biker(x1) & a_topic(x1) & Theme(e1,x3) & Actor(e1,x2) & (x1 = x2))