A fish sellers stock is looked upon by two old men.
Two elderly men are about to buy a fish.
The fact that someone is lookng up a fish stock doesn't necessarily mean that they're about to buy a fish.
exists p1 x1 x2.(a_topic(x1) & exists e1 s1 x3 x4.(Actor(e1,x4) & n_man(x4) & a_old(s1) & Theme(s1,x4) & card_eq_2(x4) & upon(e1,x3) & n_stock(x3) & v_look(e1)) & that(x1,p1) & n_seller(x1) & of(x1,x2) & n_fish(x2))
exists p1 s1 s2 x1.(Topic(s2,p1) & Actor(s2,x1) & a_about(s2) & exists e1 x2.(Theme(e1,x2) & Actor(e1,x1) & v_buy(e1) & n_fish(x2)) & n_man(x1) & a_elderly(s1) & Theme(s1,x1) & card_eq_2(x1))