[David] is taking her nephew [Chris] to the park. [Wesley] and his son [Chris] went to visit [Wesley]'s sister [Lynn] Saturday. They ate lunch and played video games.
('Lynn', 'David')
[Wesley] and his son [Chris] went to visit [Wesley]'s sister [Lynn] Saturday. They ate lunch and played video games. [David] is taking her nephew [Chris] to the park.
[{('Lynn', 'sister', 'David'): [('Lynn', 'brother', 'Wesley'), ('Wesley', 'sister', 'David')]}, {('Wesley', 'sister', 'David'): [('Wesley', 'son', 'Chris'), ('Chris', 'aunt', 'David')]}]
['brother', 'son', 'aunt']