Mongolian spots on back.
 Patient has skin findings on exam
(ROOT (FRAG (NP (NP (JJ Mongolian) (NNS spots)) (PP (IN on) (NP (RB back)))) (. .)))
(ROOT (S (NP (NN Patient)) (VP (VBZ has) (NP (NN skin) (NNS findings)) (PP (IN on) (NP (NN exam))))))
( ( ( Mongolian spots ) ( on back ) ) . )
( Patient ( ( has ( skin findings ) ) ( on exam ) ) )