[Antonio]'s brother [Robert] helped him pick a birthday gift for his daughter, [Bettie]. [Bobby] took his mother [Tracy] and his sister [Bettie] out to lunch.
('Tracy', 'Robert')
[Bobby] took his mother [Tracy] and his sister [Bettie] out to lunch. [Antonio]'s brother [Robert] helped him pick a birthday gift for his daughter, [Bettie].
[{('Tracy', 'brother', 'Robert'): [('Tracy', 'daughter', 'Bettie'), ('Bettie', 'uncle', 'Robert')]}, {('Bettie', 'uncle', 'Robert'): [('Bettie', 'father', 'Antonio'), ('Antonio', 'brother', 'Robert')]}, {('Tracy', 'daughter', 'Bettie'): [('Tracy', 'son', 'Bobby'), ('Bobby', 'sister', 'Bettie')]}]
['son', 'sister', 'father', 'brother']