A bucking brown horse next to a falling cowboy.
A horse threw a man onto a rainbow cloud.
A bucking brown horse is a very specific statement compared to A horse which is very vague.
exists e1 e2 s1 x1 x2 x3.(a_topic(x1) & to(x2,x3) & n_cowboy(x3) & Actor(e2,x3) & v_fall(e2) & next(x1,x2) & n_thing(x2) & n_horse(x1) & a_brown(s1) & Theme(s1,x1) & Actor(e1,x1) & v_buck(e1))
exists e1 x1 x2 x3 x4.(onto(e1,x3) & n_cloud(x3) & of(x3,x4) & n_rainbow(x4) & Theme(e1,x2) & Actor(e1,x1) & v_throw(e1) & n_man(x2) & n_horse(x1))