Two people are at a vegetable stand by a white truck.
Two men stand in front of a food truck in a parking lot.
The people are either at a vegetable stand or in front of a food truck, not both.
exists p1 x1.(exists s1 s2 x2 x3.(at(x1,x2) & by(x2,x3) & n_truck(x3) & a_white(s2) & Theme(s2,x3) & n_stand(x2) & a_vegetable(s1) & Theme(s1,x2)) & n_people(x1) & card_eq_2(x1))
exists e1 x1 x2 x3 x4 x5 x6.(in(e1,x2) & of(x2,x3) & in(x3,x5) & n_lot(x5) & of(x5,x6) & n_parking(x6) & n_truck(x3) & of(x3,x4) & n_food(x4) & n_front(x2) & Actor(e1,x1) & v_stand(e1) & n_man(x1) & card_eq_2(x1))