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)))))) (. .)))
The bag he checked was loaded on the plane after being screened for explosives.
( ( ( The bag ) ( he checked ) ) ( ( was ( ( loaded ( on ( the plane ) ) ) ( after ( being ( screened ( for explosives ) ) ) ) ) ) . ) )
(ROOT (S (NP (NP (DT The) (NN bag)) (SBAR (S (NP (PRP he)) (VP (VBD checked))))) (VP (VBD was) (VP (VBN loaded) (PP (IN on) (NP (DT the) (NN plane))) (PP (IN after) (S (VP (VBG being) (VP (VBD screened) (PP (IN for) (NP (NNS explosives))))))))) (. .)))