Two people are riding bikes beside train tracks.
two cyclists pedal near a track
People does not imply cyclists.
exists e1 x1 x2 x3 x4.(beside(e1,x3) & n_track(x3) & of(x3,x4) & n_train(x4) & Theme(e1,x2) & Actor(e1,x1) & v_ride(e1) & n_bike(x2) & n_people(x1) & card_eq_2(x1))
exists s1 x1 x2 x3.(a_topic(x1) & near(x1,x3) & n_track(x3) & Theme(s1,x2) & a_pedal(s1) & (x1 = x2) & n_cyclist(x1) & card_eq_2(x1))