[Cindy]'s son [Richard] and son [Wayne] went to the park together to play. [Wayne] and his aunt, [Lynn], went to the museum, and spent the whole day there.
('Richard', 'Lynn')
[Cindy]'s son [Richard] and son [Wayne] went to the park together to play. [Wayne] and his aunt, [Lynn], went to the museum, and spent the whole day there.
[{('Richard', 'aunt', 'Lynn'): [('Richard', 'mother', 'Cindy'), ('Cindy', 'sister', 'Lynn')]}, {('Cindy', 'sister', 'Lynn'): [('Cindy', 'son', 'Wayne'), ('Wayne', 'aunt', 'Lynn')]}]
['mother', 'son', 'aunt']