A short time later, Nawaf and Salem al Hazmi entered the same checkpoint.
( ( ( ( ( ( A ( short ( time later ) ) ) , ) Nawaf ) and ) ( Salem ( al Hazmi ) ) ) ( ( entered ( the ( same checkpoint ) ) ) . ) )
(ROOT (S (NP (NP (DT A) (JJ short) (NN time) (RB later)) (, ,) (NP (NNP Nawaf)) (CC and) (NP (NNP Salem) (NNP al) (NNP Hazmi))) (VP (VBD entered) (NP (DT the) (JJ same) (NN checkpoint))) (. .)))
A while afterwards, two people went into the identical checkpoint.
( ( ( A while ) afterwards ) ( , ( ( two people ) ( ( went ( into ( the ( identical checkpoint ) ) ) ) . ) ) ) )
(ROOT (S (S (NP (DT A) (NN while)) (ADVP (RB afterwards))) (, ,) (NP (CD two) (NNS people)) (VP (VBD went) (PP (IN into) (NP (DT the) (JJ identical) (NN checkpoint)))) (. .)))