Men wearing orange safety vest are filling blue bags.
They are taking a nap.
The man can not be filling and napping at the same time.
exists e1 e2 s1 x1 x2 x3 x4 x5 x6.(Theme(e2,x6) & Actor(e2,x1) & v_fill(e2) & n_bag(x6) & a_blue(s1) & Theme(s1,x6) & Theme(e1,x3) & Actor(e1,x2) & v_wear(e1) & n_vest(x3) & of(x3,x5) & n_safety(x5) & of(x3,x4) & n_orange(x4) & (x1 = x2) & n_man(x1))
exists e1 x1 x2.(n_thing(x1) & Theme(e1,x2) & Actor(e1,x1) & v_take(e1) & n_nap(x2))