A man is asleep on a seat.
A man is asleep on a seat because his wife hasn't shown up
A man can be asleep for reasoners other than because his wife hasn't shown up.
exists s1 x1 x2.(on(s1,x2) & n_seat(x2) & Theme(s1,x1) & a_asleep(s1) & n_man(x1))
exists p1 s1 x1 x2 x3.(-exists e1 s2.(a_up(s2) & Manner(e1,s2) & Actor(e1,x3) & v_show(e1)) & n_wife(x3) & of(x3,x1) & n_male(x1) & because(s1,p1) & on(s1,x2) & n_seat(x2) & Theme(s1,x1) & a_asleep(s1) & n_man(x1))