a surgeon mends a broken heart ; very meticulously but without any passion 
(ROOT (S (S (NP (DT a) (NN surgeon)) (VP (VBZ mends) (NP (DT a) (VBN broken) (NN heart)))) (, ;) (FRAG (PP (ADVP (RB very) (RB meticulously)) (CC but) (PP (IN without) (NP (DT any) (NN passion)))))))
(ROOT (S (S (NP (DT ) (NN )) (VP (VBZ ) (NP (DT ) (VBN ) (NN )))) (, ) (FRAG (PP (ADVP (RB ) (RB )) (CC ) (PP (IN ) (NP (DT ) (NN )))))))