It takes a real man to clean a bucket with who knows what in it?
A man cleaning a bucket that is not visable.
Both person are cleaning a bucket with no visible dirt in it.     Nobody knows what is inside the bucket.
exists e1 e2 p1 s1 x1 x2 x3.(Theme(e2,x2) & Actor(e2,x1) & v_take(e2) & Theme(e1,x1) & Actor(e1,x3) & v_know(e1) & in(x1,x2) & n_thing(x2) & n_what(x1) & (x2 = x3) & Topic(x2,p1) & exists e3 x4 x5.(with(e3,x5) & n_thing(x5) & Theme(e3,x4) & Actor(e3,x2) & v_clean(e3) & n_bucket(x4)) & n_man(x2) & a_real(s1) & Theme(s1,x2) & n_thing(x1))
exists e1 x1 x2 x3 x4.(a_topic(x1) & Theme(e1,x3) & Actor(e1,x2) & v_clean(e1) & -exists s1.(Theme(s1,x4) & a_visable(s1)) & (x3 = x4) & n_bucket(x3) & (x1 = x2) & n_man(x1))