Well controlled on Lipitor.
 He has a history of obesity
(ROOT (S (RB Well) (VP (VBN controlled) (PP (IN on) (NP (NNP Lipitor)))) (. .)))
(ROOT (S (NP (PRP He)) (VP (VBZ has) (NP (NP (DT a) (NN history)) (PP (IN of) (NP (NN obesity)))))))
( Well ( ( controlled ( on Lipitor ) ) . ) )
( He ( has ( ( a history ) ( of obesity ) ) ) )