a man is behind a cart trying to sell various food items.
A man is selling vegetables.
Various food items does not necessarily mean vegetables.
exists p1 x1.(exists e1 p2 x2 x3.(behind(x1,x2) & Topic(e1,p2) & Actor(e1,x3) & v_try(e1) & exists e2 s1 x4 x5.(Theme(e2,x4) & Actor(e2,x3) & v_sell(e2) & n_item(x4) & of(x4,x5) & n_food(x5) & a_various(s1) & Theme(s1,x4)) & (x2 = x3) & n_cart(x2)) & n_man(x1))
exists e1 x1 x2.(Theme(e1,x2) & Actor(e1,x1) & v_sell(e1) & n_vegetable(x2) & n_man(x1))