Opium-smoking continued openly in Hong Kong until 1946; in mainland China the Communist government abolished it when they came to power in 1949.
( ( ( ( Opium-smoking ( ( ( continued openly ) ( in ( Hong Kong ) ) ) ( until 1946 ) ) ) ; ) ( ( in ( mainland China ) ) ( ( the ( Communist government ) ) ( ( abolished it ) ( when ( they ( ( came ( to power ) ) ( in 1949 ) ) ) ) ) ) ) ) . )
(ROOT (S (S (NP (NN Opium-smoking)) (VP (VBD continued) (ADVP (RB openly)) (PP (IN in) (NP (NNP Hong) (NNP Kong))) (PP (IN until) (NP (CD 1946))))) (: ;) (S (PP (IN in) (NP (JJ mainland) (NNP China))) (NP (DT the) (JJ Communist) (NN government)) (VP (VBD abolished) (NP (PRP it)) (SBAR (WHADVP (WRB when)) (S (NP (PRP they)) (VP (VBD came) (PP (TO to) (NP (NN power))) (PP (IN in) (NP (CD 1949)))))))) (. .)))
Opium was smoked in Hong Kong until 1946 and banned in 1949.
( Opium ( ( was ( ( ( ( smoked ( in ( Hong Kong ) ) ) ( until 1946 ) ) and ) ( banned ( in 1949 ) ) ) ) . ) )
(ROOT (S (NP (NNP Opium)) (VP (VBD was) (VP (VP (VBN smoked) (PP (IN in) (NP (NNP Hong) (NNP Kong))) (PP (IN until) (NP (CD 1946)))) (CC and) (VP (VBN banned) (PP (IN in) (NP (CD 1949)))))) (. .)))