[Nancy] and her brother [Nicholas] are both adopted from the same family. [Nicholas] is excited to cheer on his brother [George] in the homecoming game tonight.
('George', 'Nancy')
[Nicholas] is excited to cheer on his brother [George] in the homecoming game tonight. [Nancy] and her brother [Nicholas] are both adopted from the same family.
[{('George', 'sister', 'Nancy'): [('George', 'brother', 'Nicholas'), ('Nicholas', 'sister', 'Nancy')]}]
['brother', 'sister']