Old hands are working on a task.
There are people working on a task
Old hands implies that there are people.
exists e1 x1 x2 x3.(on(e1,x3) & n_task(x3) & Actor(e1,x1) & v_work(e1) & n_hand(x1) & (x1 = x2) & ne_nam_old(x2))
exists p1 x1 e1 x2 x3 x4.((x1 = x2) & on(e1,x4) & n_task(x4) & Actor(e1,x3) & v_work(e1) & (x2 = x3) & n_people(x2))