A man is singing at a concert.
The woman is made of sand
A man is not a woman; in addition, someone who is singing is alive while something made of sand is not alive.
exists e1 x1 x2.(at(e1,x2) & n_concert(x2) & Actor(e1,x1) & v_sing(e1) & n_man(x1))
exists e1 x1 x2.(n_woman(x1) & of(e1,x2) & n_sand(x2) & Theme(e1,x1) & v_make(e1))