A fluffy Sheltie is trotting along a path.
There is a cat chasing a ball.
A fluffy Sheltie is a dog not a cat
exists e1 s1 x1 x2.(along(e1,x2) & n_path(x2) & Actor(e1,x1) & v_trot(e1) & ne_org_sheltie(x1) & a_fluffy(s1) & Theme(s1,x1))
exists p1 x1 e1 x2 x3 x4.((x1 = x2) & Theme(e1,x4) & Actor(e1,x3) & v_chase(e1) & n_ball(x4) & (x2 = x3) & n_cat(x2))