A man stands in front of a woman who is sitting behind a table.
A woman is standing in front of a man.
The woman can not be sitting and standing at the same time.
exists e2 e1 x1 x2 x3 x4 x5.(in(e1,x2) & of(x2,x3) & behind(e2,x5) & n_table(x5) & Actor(e2,x4) & v_sit(e2) & (x3 = x4) & n_woman(x3) & n_front(x2) & Actor(e1,x1) & v_stand(e1) & n_man(x1))
exists e1 x1 x2 x3.(in(e1,x2) & of(x2,x3) & n_man(x3) & n_front(x2) & Actor(e1,x1) & v_stand(e1) & n_woman(x1))