His checked bag was screened for explosives and then loaded on the plane.
( ( His ( checked bag ) ) ( ( was ( ( ( screened ( for explosives ) ) and ) ( then ( loaded ( on ( the plane ) ) ) ) ) ) . ) )
(ROOT (S (NP (PRP$ His) (JJ checked) (NN bag)) (VP (VBD was) (VP (VP (VBN screened) (PP (IN for) (NP (NNS explosives)))) (CC and) (VP (ADVP (RB then)) (VBN loaded) (PP (IN on) (NP (DT the) (NN plane)))))) (. .)))
His bag passed the explosives test and was loaded on the plane before the passengers were loaded.
( ( His bag ) ( ( ( ( passed ( the ( explosives test ) ) ) and ) ( was ( ( loaded ( on ( the plane ) ) ) ( before ( ( the passengers ) ( were loaded ) ) ) ) ) ) . ) )
(ROOT (S (NP (PRP$ His) (NN bag)) (VP (VP (VBD passed) (NP (DT the) (JJ explosives) (NN test))) (CC and) (VP (VBD was) (VP (VBN loaded) (PP (IN on) (NP (DT the) (NN plane))) (SBAR (IN before) (S (NP (DT the) (NNS passengers)) (VP (VBD were) (VP (VBN loaded)))))))) (. .)))