[Tracy] took her mother, [Shantel], out for lunch. [Beverly]'s mother [Shantel] and brother [Pedro] sat to discuss good birthday gifts for [Pedro]'s brother, [Robert].
('Tracy', 'Robert')
[Tracy] took her mother, [Shantel], out for lunch. [Beverly]'s mother [Shantel] and brother [Pedro] sat to discuss good birthday gifts for [Pedro]'s brother, [Robert].
[{('Tracy', 'brother', 'Robert'): [('Tracy', 'brother', 'Pedro'), ('Pedro', 'brother', 'Robert')]}, {('Tracy', 'brother', 'Pedro'): [('Tracy', 'sister', 'Beverly'), ('Beverly', 'brother', 'Pedro')]}, {('Tracy', 'sister', 'Beverly'): [('Tracy', 'mother', 'Shantel'), ('Shantel', 'daughter', 'Beverly')]}]
['mother', 'daughter', 'brother', 'brother']