The Office of Information and Regulatory Affairs of OMB approved the
( ( ( ( The Office ) ( of ( Information ( and ( Regulatory Affairs ) ) ) ) ) ( of OMB ) ) ( approved the ) )
(ROOT (S (NP (NP (DT The) (NN Office)) (PP (IN of) (NP (NNP Information) (CC and) (NNP Regulatory) (NNPS Affairs))) (PP (IN of) (NP (NNP OMB)))) (VP (VBD approved) (NP (DT the)))))
Something was approved by the office of affairs.
( Something ( ( was ( approved ( by ( ( the office ) ( of affairs ) ) ) ) ) . ) )
(ROOT (S (NP (NN Something)) (VP (VBD was) (VP (VBN approved) (PP (IN by) (NP (NP (DT the) (NN office)) (PP (IN of) (NP (NNS affairs))))))) (. .)))