A man is sitting and a female is walking.
A man is running after the woman.
People can not be running and sitting at the same time.
exists e2 e1 x1 x2.(Actor(e2,x2) & v_walk(e2) & n_female(x2) & Actor(e1,x1) & v_sit(e1) & n_man(x1))
exists e1 x1 x2.(n_woman(x2) & after(e1,x2) & Actor(e1,x1) & v_run(e1) & n_man(x1))