You cannot touch, see, or hear the most important benefit of your Audubon membership.
( You ( ( ( can not ) ( ( ( ( ( ( touch , ) see ) , ) or ) hear ) ( ( the ( ( most important ) benefit ) ) ( of ( your ( Audubon membership ) ) ) ) ) ) . ) )
(ROOT (S (NP (PRP You)) (VP (MD can) (RB not) (VP (VB touch) (, ,) (VB see) (, ,) (CC or) (VB hear) (NP (NP (DT the) (ADJP (RBS most) (JJ important)) (NN benefit)) (PP (IN of) (NP (PRP$ your) (NNP Audubon) (NN membership)))))) (. .)))
Audubon membership's most important benefit cannot be touched, seen or heard.
( ( ( Audubon ( membership 's ) ) ( ( most important ) benefit ) ) ( ( ( can not ) ( be ( ( ( ( touched , ) seen ) or ) heard ) ) ) . ) )
(ROOT (S (NP (NP (JJ Audubon) (NN membership) (POS 's)) (ADJP (RBS most) (JJ important)) (NN benefit)) (VP (MD can) (RB not) (VP (VB be) (VP (VBN touched) (, ,) (VBN seen) (CC or) (VBN heard)))) (. .)))