[Dennis] went to visit his aunt [Theresa] over the holiday and she gave him a present. [Dennis] asked his father, [Nicholas] to help him build a birdhouse.
('Nicholas', 'Theresa')
[Dennis] asked his father, [Nicholas] to help him build a birdhouse. [Dennis] went to visit his aunt [Theresa] over the holiday and she gave him a present.
[{('Nicholas', 'sister', 'Theresa'): [('Nicholas', 'son', 'Dennis'), ('Dennis', 'aunt', 'Theresa')]}]
['son', 'aunt']