[Mary] asked her father [Nicholas] to take her to school. [Nicholas] said he'd take her in a few minutes. [Mary] was sewing a sweater for her sister [Jennifer].
('Jennifer', 'Nicholas')
[Mary] was sewing a sweater for her sister [Jennifer]. [Mary] asked her father [Nicholas] to take her to school. [Nicholas] said he'd take her in a few minutes.
[{('Jennifer', 'father', 'Nicholas'): [('Jennifer', 'sister', 'Mary'), ('Mary', 'father', 'Nicholas')]}]
['sister', 'father']