[Heidi] and her mother [Nancy] went dress shopping on Saturday. [Heidi] took her uncle [Nicholas] to the grocery store.
('Nancy', 'Nicholas')
[Heidi] and her mother [Nancy] went dress shopping on Saturday. [Heidi] took her uncle [Nicholas] to the grocery store.
[{('Nancy', 'brother', 'Nicholas'): [('Nancy', 'daughter', 'Heidi'), ('Heidi', 'uncle', 'Nicholas')]}]
['daughter', 'uncle']