His Coumadin has been on hold for eye surgery.
 He is not on anticoagulant therapy
(ROOT (S (NP (PRP$ His) (NNP Coumadin)) (VP (VBZ has) (VP (VBN been) (PP (IN on) (NP (NN hold))) (PP (IN for) (NP (NN eye) (NN surgery))))) (. .)))
(ROOT (S (NP (PRP He)) (VP (VBZ is) (RB not) (PP (IN on) (NP (JJ anticoagulant) (NN therapy))))))
( ( His Coumadin ) ( ( has ( ( been ( on hold ) ) ( for ( eye surgery ) ) ) ) . ) )
( He ( ( is not ) ( on ( anticoagulant therapy ) ) ) )