History of pulmonary embolism.
 patient is anti coagulated
(ROOT (NP (NP (NP (NN History)) (PP (IN of) (NP (JJ pulmonary) (NN embolism)))) (. .)))
(ROOT (S (NP (NN patient)) (VP (VBZ is) (ADJP (JJ anti) (VBN coagulated)))))
( ( History ( of ( pulmonary embolism ) ) ) . )
( patient ( is ( anti coagulated ) ) )