Several people are riding horses on a wooded trail.
Several men are riding horses on a wooded trail.
Just because they are people, doesn't mean that they are men.
exists e1 s1 s2 x1 x2 x3.(on(e1,x3) & n_trail(x3) & a_wooded(s2) & Theme(s2,x3) & Theme(e1,x2) & Actor(e1,x1) & v_ride(e1) & n_horse(x2) & n_people(x1) & a_several(s1) & Theme(s1,x1))
exists e1 s1 s2 x1 x2 x3.(on(e1,x3) & n_trail(x3) & a_wooded(s2) & Theme(s2,x3) & Theme(e1,x2) & Actor(e1,x1) & v_ride(e1) & n_horse(x2) & n_man(x1) & a_several(s1) & Theme(s1,x1))