A brown horse with a white mane pulls a ploy with a man sitting on it in a field.
The horse was pulling a carriage with a man inside.
Saying that a man is inside a vehicle can mean the same as a man sitting on it.
exists e1 e2 s1 s2 x1 x2 x3 x4 x5 x6.(with(e1,x4) & in(e2,x6) & n_field(x6) & on(e2,x1) & n_thing(x1) & Actor(e2,x5) & v_sit(e2) & (x4 = x5) & n_man(x4) & Theme(e1,x3) & Actor(e1,x1) & v_pull(e1) & n_ploy(x3) & with(x1,x2) & n_mane(x2) & a_white(s2) & Theme(s2,x2) & n_horse(x1) & a_brown(s1) & Theme(s1,x1))
exists e1 x1 x2 x3 x4.(n_horse(x1) & with(e1,x3) & n_inside(x3) & of(x3,x4) & n_man(x4) & Theme(e1,x2) & Actor(e1,x1) & v_pull(e1) & n_carriage(x2))