A dog chases a Nerf ball in the grass.
The cat fetches the Nerf ball
A dog and a cat are different species.
exists e1 x1 x2 x3 x4.(n_grass(x4) & in(e1,x4) & Theme(e1,x2) & Actor(e1,x1) & v_chase(e1) & n_ball(x2) & (x2 = x3) & ne_org_nerf(x3) & n_dog(x1))
exists e1 x1 x2 x3.(n_ball(x2) & (x2 = x3) & ne_geo_nerf(x3) & n_cat(x1) & Theme(e1,x2) & Actor(e1,x1) & v_fetch(e1))