A boy surfs.
the boy is on the moon
It is not possible to surf as it requires water and there is not a body of water on the moon.
exists e1 x1.(Actor(e1,x1) & v_surf(e1) & n_boy(x1))
exists p1 x1 x2.(n_moon(x2) & n_boy(x1) & on(x1,x2))