Two men are tending to their wares while others wait.
Two men browse through products for sale.
One does not browse through products to buy if they are tending to their wares.
exists e1 p1 x1 x2.(exists e2 x3.(Actor(e2,x3) & v_wait(e2) & -(x3 = x1) & n_person(x3)) & n_person(x1) & while(e1,p1) & to(e1,x2) & n_wares(x2) & of(x2,x1) & n_thing(x1) & Actor(e1,x1) & v_tend(e1) & n_man(x1) & card_eq_2(x1))
exists e1 x1 x2 x3.(through(e1,x2) & for(x2,x3) & n_sale(x3) & n_product(x2) & Actor(e1,x1) & v_browse(e1) & n_man(x1) & card_eq_2(x1))