A man is upside down in the air.
There is a man who is upside down.
The man is upside down and either way he is upside down so it works appropriately.
exists s1 x1 x2.(n_air(x2) & r_upside(s1) & in(s1,x2) & Theme(s1,x1) & a_down(s1) & n_man(x1))
exists p1 x1 s1 x2 x3.((x1 = x2) & r_upside(s1) & Theme(s1,x3) & a_down(s1) & (x2 = x3) & n_man(x2))