[Nicholas]'s sister, [Nancy], was crying, so he told her a joke. She laughed, and felt better. [Jennifer] went out for pizza with her father [Nicholas].
('Jennifer', 'Nancy')
[Jennifer] went out for pizza with her father [Nicholas]. [Nicholas]'s sister, [Nancy], was crying, so he told her a joke. She laughed, and felt better.
[{('Jennifer', 'aunt', 'Nancy'): [('Jennifer', 'father', 'Nicholas'), ('Nicholas', 'sister', 'Nancy')]}]
['father', 'sister']