Old hands are working on a task.
There are people watching others work on a task
You can't watch others work on a task and work on a task at the same time.
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 e1 p1 x1 x2 x3.(on(e1,x3) & n_task(x3) & Actor(e1,x1) & v_work(e1) & exists e2 x4 x5 x6.((x2 = x4) & Theme(e2,x6) & Actor(e2,x5) & v_watch(e2) & -(x6 = x3) & n_person(x6) & (x4 = x5) & n_people(x4)) & n_person(x3) & (x1 = x2))