A small boy, wearing shorts and no shirt, is running outdoors.
The boy is running after a butterfly.
All boys running are not after a butterfly
exists e1 e2 s1 x1 x2 x3 x4 x5.(Theme(e2,x5) & Actor(e2,x1) & v_run(e2) & n_outdoors(x5) & -exists x6.(subset_of(x6,x1) & n_shirt(x6)) & subset_of(x2,x1) & Theme(e1,x4) & Actor(e1,x3) & v_wear(e1) & n_shorts(x4) & (x2 = x3) & n_boy(x2) & a_small(s1) & Theme(s1,x2))
exists e1 x1 x2.(n_boy(x1) & after(e1,x2) & n_butterfly(x2) & Actor(e1,x1) & v_run(e1))