Bilateral carpal tunnel release surgery.
 History of obesity
(ROOT (NP (NP (JJ Bilateral) (JJ carpal) (NN tunnel) (NN release) (NN surgery)) (. .)))
(ROOT (NP (NP (NN History)) (PP (IN of) (NP (NN obesity)))))
( ( Bilateral ( carpal ( tunnel ( release surgery ) ) ) ) . )
( History ( of obesity ) )