An old man with a white beard tills the ground.
An old man is shining a pair of shoes.
A man who tills the ground cannot also be shining shoes.
exists e1 s1 s2 x1 x2 x3.(n_ground(x3) & Theme(e1,x3) & Actor(e1,x1) & v_till(e1) & with(x1,x2) & n_beard(x2) & a_white(s2) & Theme(s2,x2) & n_man(x1) & a_old(s1) & Theme(s1,x1))
exists e1 s1 x1 x2 x3.(Theme(e1,x2) & Actor(e1,x1) & v_shine(e1) & of(x2,x3) & n_shoe(x3) & n_pair(x2) & n_man(x1) & a_old(s1) & Theme(s1,x1))