In interviews with us, NEADS personnel expressed considerable confusion over the nature and effect of the order.
( ( In ( interviews ( with us ) ) ) ( , ( ( NEADS personnel ) ( ( ( expressed ( considerable confusion ) ) ( over ( ( the ( ( nature and ) effect ) ) ( of ( the order ) ) ) ) ) . ) ) ) )
(ROOT (S (PP (IN In) (NP (NP (NNS interviews)) (PP (IN with) (NP (PRP us))))) (, ,) (NP (NNP NEADS) (NNS personnel)) (VP (VBD expressed) (NP (JJ considerable) (NN confusion)) (PP (IN over) (NP (NP (DT the) (NN nature) (CC and) (NN effect)) (PP (IN of) (NP (DT the) (NN order)))))) (. .)))
NEADS personnel was confused about certain details about the order.
( ( NEADS personnel ) ( ( was ( confused ( about ( ( certain details ) ( about ( the order ) ) ) ) ) ) . ) )
(ROOT (S (NP (NNP NEADS) (NNS personnel)) (VP (VBD was) (VP (VBN confused) (PP (IN about) (NP (NP (JJ certain) (NNS details)) (PP (IN about) (NP (DT the) (NN order))))))) (. .)))