There is a man surfing at night.
A man surfs at night with the stars in the background.
Night does not imply that the stars are visible.
exists p1 x1 x2 x3 x4.((x1 = x2) & at(x2,x4) & n_night(x4) & n_surfing(x2) & of(x2,x3) & n_man(x3))
exists e1 x1 x2 x3 x4.(n_background(x4) & n_star(x3) & at(e1,x2) & with(x2,x3) & in(x3,x4) & n_night(x2) & Actor(e1,x1) & v_surf(e1) & n_man(x1))