[Dorothy]'s biggest accomplishment is raising her son [Jeffrey]. [Tracy] ca n't wait to go to Australia with her nephew [Jeffrey]. [Tracy] read her son [Aaron] a bedtime story every night. [Pedro] bought his wife [Dorothy] roses.
('Pedro', 'Aaron')
[Pedro] bought his wife [Dorothy] roses. [Dorothy]'s biggest accomplishment is raising her son [Jeffrey]. [Tracy] ca n't wait to go to Australia with her nephew [Jeffrey]. [Tracy] read her son [Aaron] a bedtime story every night.
[{('Pedro', 'nephew', 'Aaron'): [('Pedro', 'sister', 'Tracy'), ('Tracy', 'son', 'Aaron')]}, {('Pedro', 'sister', 'Tracy'): [('Pedro', 'son', 'Jeffrey'), ('Jeffrey', 'aunt', 'Tracy')]}, {('Pedro', 'son', 'Jeffrey'): [('Pedro', 'wife', 'Dorothy'), ('Dorothy', 'son', 'Jeffrey')]}]
['wife', 'son', 'aunt', 'son']