A dog grinning at the camera.
A pet who is waiting for a treat.
A dog grinning at the camera isn't necessarily waiting for a treat.
exists e1 x1 x2 x3.(n_camera(x3) & a_topic(x1) & at(e1,x3) & Actor(e1,x2) & v_grin(e1) & (x1 = x2) & n_dog(x1))
exists e1 x1 x2 x3.(a_topic(x1) & for(e1,x3) & n_treat(x3) & Actor(e1,x2) & v_wait(e1) & (x1 = x2) & n_pet(x1))