[Robert] likes to watch boxing with his brother. His name is [Pedro]. [Pedro] was upset at his daughter [Annie] for staying out so late. Last night, [Dorothy] went out with her sister [Tracy], accompanied by [Dorothy]'s daughter [Annie].
('Tracy', 'Robert')
Last night, [Dorothy] went out with her sister [Tracy], accompanied by [Dorothy]'s daughter [Annie]. [Pedro] was upset at his daughter [Annie] for staying out so late. [Robert] likes to watch boxing with his brother. His name is [Pedro].
[{('Tracy', 'brother', 'Robert'): [('Tracy', 'sister', 'Dorothy'), ('Dorothy', 'brother', 'Robert')]}, {('Dorothy', 'brother', 'Robert'): [('Dorothy', 'daughter', 'Annie'), ('Annie', 'uncle', 'Robert')]}, {('Annie', 'uncle', 'Robert'): [('Annie', 'father', 'Pedro'), ('Pedro', 'brother', 'Robert')]}]
['sister', 'daughter', 'father', 'brother']