Cardiovascular S1 and S2 without murmur.
 The patient has a mitral regurgitation murmur. 
(ROOT (NP (NP (NP (NNP Cardiovascular) (NN S1) (CC and) (NN S2)) (PP (IN without) (NP (NN murmur)))) (. .)))
(ROOT (S (NP (DT The) (NN patient)) (VP (VBZ has) (NP (DT a) (JJ mitral) (NN regurgitation) (NN murmur))) (. .)))
( ( ( Cardiovascular ( ( S1 and ) S2 ) ) ( without murmur ) ) . )
( ( The patient ) ( ( has ( a ( mitral ( regurgitation murmur ) ) ) ) . ) )