[Cindy] saw her sister [Lynn] at the grocery store and then went to visit her brother [Wesley] later that evening. [Lynn] has a son named [Don].
('Wesley', 'Don')
[Cindy] saw her sister [Lynn] at the grocery store and then went to visit her brother [Wesley] later that evening. [Lynn] has a son named [Don].
[{('Wesley', 'nephew', 'Don'): [('Wesley', 'sister', 'Lynn'), ('Lynn', 'son', 'Don')]}, {('Wesley', 'sister', 'Lynn'): [('Wesley', 'sister', 'Cindy'), ('Cindy', 'sister', 'Lynn')]}]
['sister', 'sister', 'son']