A hound dog runs around in a house chasing a toy.
A dog playing.
The dog runs around in a house chasing a toy but the dog isn't necessarily playing.
exists e1 e2 s1 x1 x2 x3 x4.(for(e1,e2) & Theme(e2,x4) & Actor(e2,x1) & v_chase(e2) & n_toy(x4) & in(e1,x3) & n_house(x3) & a_around(s1) & Manner(e1,s1) & Actor(e1,x1) & v_run(e1) & n_dog(x1) & of(x1,x2) & n_hound(x2))
exists x1 x2.(a_topic(x1) & n_playing(x1) & of(x1,x2) & n_dog(x2))