's ) better at fingering problems than finding solutions . 
(ROOT (FRAG (NP (POS 's)) (-RRB- -RRB-) (ADJP (ADJP (JJR better) (PP (IN at) (S (VP (NN fingering) (NP (NNS problems)))))) (PP (IN than) (S (VP (VBG finding) (NP (NNS solutions)))))) (. .)))
(ROOT (FRAG (NP (POS )) (-RRB- ) (ADJP (ADJP (JJR ) (PP (IN ) (S (VP (NN ) (NP (NNS )))))) (PP (IN ) (S (VP (VBG ) (NP (NNS )))))) (. )))