One tractor trying to pick up another.
A tractor is picking up another tractor on Friday.
A tractor also can pick up another tractor on days other than Friday.
exists e1 p1 x1 x2.(a_topic(x1) & Topic(e1,p1) & Actor(e1,x2) & v_try(e1) & exists e2 s1 x3.(a_up(s1) & Manner(e2,s1) & Theme(e2,x3) & Actor(e2,x2) & v_pick(e2) & n_thing(x3)) & (x1 = x2) & n_tractor(x1) & card_eq_1(x1))
exists e1 s1 x1 x2 x3.(ne_tim_friday(x3) & on(e1,x3) & a_up(s1) & Manner(e1,s1) & Theme(e1,x2) & Actor(e1,x1) & v_pick(e1) & n_tractor(x2) & -(x2 = x1) & n_tractor(x1) & n_tractor(x1))