Two men on a dock preparing freshly caught fish.
Two men are fishing off a pier.
A pier is different than a dock, you cannot be on both. Preparing already caught fish cannot be done while fishing; they're two different actions.
exists e1 e2 s1 x1 x2 x3 x4.(a_topic(x1) & on(x1,x2) & for(e1,e2) & a_freshly(s1) & Manner(e2,s1) & Theme(e2,x3) & v_catch(e2) & Theme(e1,x4) & Actor(e1,x3) & v_prepare(e1) & n_fish(x4) & (x2 = x3) & n_dock(x2) & n_man(x1) & card_eq_2(x1))
exists e1 s1 x1 x2.(a_off(s1) & Manner(e1,s1) & Theme(e1,x2) & Actor(e1,x1) & v_fish(e1) & n_pier(x2) & n_man(x1) & card_eq_2(x1))