[Bernardo] and his brother [Aaron] fight a lot. Despite this, they still love each other very much. [Tracy]'s son, [Bobby], came over to her house for dinner. [Aaron], [Bobby]'s brother, came too. [Bernardo] bought an expensive ring for his wife [Erika].
('Tracy', 'Erika')
[Tracy]'s son, [Bobby], came over to her house for dinner. [Aaron], [Bobby]'s brother, came too. [Bernardo] and his brother [Aaron] fight a lot. Despite this, they still love each other very much. [Bernardo] bought an expensive ring for his wife [Erika].
[{('Tracy', 'daughter-in-law', 'Erika'): [('Tracy', 'son', 'Bernardo'), ('Bernardo', 'wife', 'Erika')]}, {('Tracy', 'son', 'Bernardo'): [('Tracy', 'son', 'Aaron'), ('Aaron', 'brother', 'Bernardo')]}, {('Tracy', 'son', 'Aaron'): [('Tracy', 'son', 'Bobby'), ('Bobby', 'brother', 'Aaron')]}]
['son', 'brother', 'brother', 'wife']