Young boy in orange shirt walking on rocks.
A boy is chasing a cat.
walking and chasing are different actions
exists e1 s1 x1 x2 x3 x4 x5.(a_topic(x1) & in(x1,x2) & on(e1,x5) & n_rock(x5) & Actor(e1,x4) & v_walk(e1) & (x2 = x4) & n_shirt(x2) & of(x2,x3) & n_orange(x3) & n_boy(x1) & a_young(s1) & Theme(s1,x1))
exists e1 x1 x2.(Theme(e1,x2) & Actor(e1,x1) & v_chase(e1) & n_cat(x2) & n_boy(x1))