A green beetle is resting upon a freckled nose of a young boy.
A beetle is on a boys nose.
Saying "on " is just a rephrasing of the phrase "resting upon ."
exists e1 s1 s2 s3 x1 x2 x3.(upon(e1,x2) & of(x2,x3) & n_boy(x3) & a_young(s3) & Theme(s3,x3) & n_nose(x2) & a_freckled(s2) & Theme(s2,x2) & Actor(e1,x1) & v_rest(e1) & n_beetle(x1) & a_green(s1) & Theme(s1,x1))
exists p1 x1.(exists x2 x3.(on(x1,x2) & n_nose(x2) & of(x2,x3) & n_boy(x3)) & n_beetle(x1))