Three people on motorbikes follow a trail through dry grass.
The people follow the trail.
"people follow a trail" has the same meaning as "people follow the trail".
exists e1 s1 x1 x2 x3 x4.(through(e1,x4) & n_grass(x4) & a_dry(s1) & Theme(s1,x4) & Theme(e1,x3) & Actor(e1,x1) & v_follow(e1) & n_trail(x3) & on(x1,x2) & n_motorbike(x2) & n_people(x1) & card_eq_3(x1))
exists e1 x1 x2.(n_trail(x2) & n_people(x1) & Theme(e1,x2) & Actor(e1,x1) & v_follow(e1))