A young couple lying in bed.
A couple plays tennis.
They can't be both laying in bed and playing tennis
exists e1 s1 x1 x2 x3.(a_topic(x1) & in(e1,x3) & n_bed(x3) & Actor(e1,x2) & v_lie(e1) & (x1 = x2) & n_couple(x1) & a_young(s1) & Theme(s1,x1))
exists e1 x1 x2.(Theme(e1,x2) & Actor(e1,x1) & v_play(e1) & n_tennis(x2) & n_couple(x1))