[Nicholas] is in the sixth grade. He looks up to his sister [Lillian], who is in the seventh. [Lillian] is always around her brother [Wayne].
('Nicholas', 'Wayne')
[Nicholas] is in the sixth grade. He looks up to his sister [Lillian], who is in the seventh. [Lillian] is always around her brother [Wayne].
[{('Nicholas', 'brother', 'Wayne'): [('Nicholas', 'sister', 'Lillian'), ('Lillian', 'brother', 'Wayne')]}]
['sister', 'brother']