[Charles] and his aunt, [Lynn], went to Disney World. They had a great time! [Charles]'s brother, [Chris], recently got elected as a senator. [Lena] likes taking her son [Chris] to school.
('Lena', 'Lynn')
[Lena] likes taking her son [Chris] to school. [Charles]'s brother, [Chris], recently got elected as a senator. [Charles] and his aunt, [Lynn], went to Disney World. They had a great time!
[{('Lena', 'sister', 'Lynn'): [('Lena', 'son', 'Charles'), ('Charles', 'aunt', 'Lynn')]}, {('Lena', 'son', 'Charles'): [('Lena', 'son', 'Chris'), ('Chris', 'brother', 'Charles')]}]
['son', 'brother', 'aunt']