[Glen] and his aunt, [Lillian], went to Disney World. They had a great time! [Nicholas] was delighted to watch his son [Glen] steal third base in the Championship baseball game.
('Nicholas', 'Lillian')
[Nicholas] was delighted to watch his son [Glen] steal third base in the Championship baseball game. [Glen] and his aunt, [Lillian], went to Disney World. They had a great time!
[{('Nicholas', 'sister', 'Lillian'): [('Nicholas', 'son', 'Glen'), ('Glen', 'aunt', 'Lillian')]}]
['son', 'aunt']