Two men are sitting behind a vegetable stall.
The two farmers sat behind the stall.
Not all men sitting behind a vegetable stall are farmers.
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.(n_stall(x2) & n_farmer(x1) & card_eq_2(x1) & behind(e1,x2) & Actor(e1,x1) & v_sit(e1))