Though the two cities remained unlinked by rail, this was about to change quickly.
( ( Though ( ( the ( two cities ) ) ( ( remained unlinked ) ( by rail ) ) ) ) ( , ( this ( ( was ( about ( to ( change quickly ) ) ) ) . ) ) ) )
(ROOT (S (SBAR (IN Though) (S (NP (DT the) (CD two) (NNS cities)) (VP (VBD remained) (ADJP (JJ unlinked)) (PP (IN by) (NP (NN rail)))))) (, ,) (NP (DT this)) (VP (VBD was) (VP (IN about) (S (VP (TO to) (VP (VB change) (ADVP (RB quickly))))))) (. .)))
The two cities had a railway between them that made travel easy.
( ( The ( two cities ) ) ( ( had ( ( ( a railway ) ( between them ) ) ( that ( made ( travel easy ) ) ) ) ) . ) )
(ROOT (S (NP (DT The) (CD two) (NNS cities)) (VP (VBD had) (NP (NP (DT a) (NN railway)) (PP (IN between) (NP (PRP them))) (SBAR (WHNP (WDT that)) (S (VP (VBD made) (ADJP (NN travel) (JJ easy))))))) (. .)))