After the purge of foreigners, only a few stayed on, strictly confined to Dejima Island in Nagasaki Bay.
( ( After ( ( the purge ) ( of foreigners ) ) ) ( , ( ( only ( a few ) ) ( ( ( ( stayed on ) , ) ( strictly ( confined ( to ( ( Dejima Island ) ( in ( Nagasaki Bay ) ) ) ) ) ) ) . ) ) ) )
(ROOT (S (PP (IN After) (NP (NP (DT the) (NN purge)) (PP (IN of) (NP (NNS foreigners))))) (, ,) (NP (QP (RB only) (DT a) (JJ few))) (VP (VBD stayed) (PRT (RP on)) (, ,) (S (ADVP (RB strictly)) (VP (VBN confined) (PP (TO to) (NP (NP (NNP Dejima) (NNP Island)) (PP (IN in) (NP (NNP Nagasaki) (NNP Bay)))))))) (. .)))
A few foreigners were left free after the purge on foreigners.
( ( A ( few foreigners ) ) ( ( were ( ( left free ) ( after ( ( the purge ) ( on foreigners ) ) ) ) ) . ) )
(ROOT (S (NP (DT A) (JJ few) (NNS foreigners)) (VP (VBD were) (VP (VBN left) (ADVP (JJ free)) (PP (IN after) (NP (NP (DT the) (NN purge)) (PP (IN on) (NP (NNS foreigners))))))) (. .)))