A group of tanned people at a stand with vegetables.
Some women with tans are buying vegetables.
People might be men or women or children.  People who are at a stand with vegetables aren't necessarily buying them.
exists s1 x1 x2 x3 x4.(a_topic(x1) & of(x1,x2) & at(x2,x3) & with(x3,x4) & n_vegetable(x4) & n_stand(x3) & n_people(x2) & a_tanned(s1) & Theme(s1,x2) & n_group(x1))
exists e1 x1 x2 x3.(Theme(e1,x3) & Actor(e1,x1) & v_buy(e1) & n_vegetable(x3) & with(x1,x2) & n_tan(x2) & n_woman(x1))