A street vendor is gathering bread and pretzels to sell.
The vendor has nothing for sale.
If someone has bread and pretzels, they do not have nothing.
exists e1 e2 p1 x1 x2 x3 x4 x5.(Topic(e2,p1) & Actor(e2,x4) & v_pretzel(e2) & exists e3.(Actor(e3,x4) & v_sell(e3)) & n_vendor(x4) & of(x4,x5) & n_street(x5) & Theme(e1,x3) & Actor(e1,x1) & v_gather(e1) & n_bread(x3) & n_vendor(x1) & of(x1,x2) & n_street(x2))
exists x1.(n_vendor(x1) & -exists e1 x2 x3.(Theme(e1,x2) & Actor(e1,x1) & v_have(e1) & for(x2,x3) & n_sale(x3) & n_thing(x2)))