premise: A motor Cross mountain bike racer is on a very bumpy ride.
hypothesis: the couple is having lunch in the park
explanation_1: A racer suggests one person, whereas a couple suggests two. Also, a person cannot be having a bumpy ride and having lunch at the same time
premise_logic: exists p1 x1 x2 x3 x4 x5.(exists s1 x6.(on(x1,x6) & n_ride(x6) & a_bumpy(s1) & Theme(s1,x6) & r_very(x6)) & n_racer(x1) & of(x1,x5) & n_bike(x5) & of(x1,x4) & n_mountain(x4) & (x1 = x3) & ne_nam_cross(x3) & of(x1,x2) & n_motor(x2))
hypothesis_logic: exists e1 x1 x2 x3.(n_park(x3) & n_couple(x1) & in(e1,x3) & Theme(e1,x2) & Actor(e1,x1) & v_have(e1) & n_lunch(x2))
premise_sim: exists x1 x2 x3 x4 x5.(of(x1,x5) & of(x1,x4) & of(x1,x2) & ne_nam_cross(x3) & n_racer(x1) & n_mountain(x4) & n_motor(x2) & n_bike(x5) & exists s1 x6.(r_very(x6) & on(x1,x6) & n_ride(x6) & a_bumpy(s1) & Theme(s1,x6)) & (x1 = x3))
hypothesis_sim: exists e1 x1 x2 x3.(v_have(e1) & n_park(x3) & n_lunch(x2) & n_couple(x1) & in(e1,x3) & Theme(e1,x2) & Actor(e1,x1))