Gore has been Clinton's lackey for more than six years.
( Gore ( ( has ( been ( ( ( Clinton 's ) lackey ) ( for ( ( more ( than six ) ) years ) ) ) ) ) . ) )
(ROOT (S (NP (NNP Gore)) (VP (VBZ has) (VP (VBN been) (NP (NP (NP (NNP Clinton) (POS 's)) (NN lackey)) (PP (IN for) (NP (QP (JJR more) (IN than) (CD six)) (NNS years)))))) (. .)))
Gore has worked on healthcare with Clinton for six years.
( Gore ( ( has ( ( worked ( on healthcare ) ) ( with ( Clinton ( for ( six years ) ) ) ) ) ) . ) )
(ROOT (S (NP (NNP Gore)) (VP (VBZ has) (VP (VBN worked) (PP (IN on) (NP (NN healthcare))) (PP (IN with) (NP (NP (NNP Clinton)) (PP (IN for) (NP (CD six) (NNS years))))))) (. .)))