A man and woman sleep on a bus while it travels.
The people are sitting down and playing poker.
You can either sleep or play poker, not both.
(x)
exists e2 e1 p1 x1 x2.(n_people(x1) & Theme(e2,x2) & Actor(e2,x1) & v_play(e2) & n_poker(x2) & exists s1.(Theme(s1,x1) & a_down(s1)) & Topic(e1,p1) & Actor(e1,x1) & v_sit(e1))