Two men are sitting behind a vegetable stall.
The two women stood in front of the stall.
Men and women belong to different genders and a person can't be both a man and a woman at the same time. If people stood in front of a stall, then the same people can't be sitting at the same instant. Someone behind a stall can't be in front of the stall at the same instant.
exists e1 s1 x1 x2.(behind(e1,x2) & n_stall(x2) & a_vegetable(s1) & Theme(s1,x2) & Actor(e1,x1) & v_sit(e1) & n_man(x1) & card_eq_2(x1))
exists e1 x1 x2 x3.(n_stall(x3) & n_woman(x1) & card_eq_2(x1) & in(e1,x2) & of(x2,x3) & n_front(x2) & Actor(e1,x1) & v_stand(e1))