[Erika] met her brother, [Kevin], for dinner. [Kevin] was sad his father, [Tracy], could n't be there. [Erika] loves to visit her Uncle [Pedro] on his farm. [Louis] and his brother [Pedro] went to see a baseball game on Friday and had a great time.
('Tracy', 'Louis')
[Erika] met her brother, [Kevin], for dinner. [Kevin] was sad his father, [Tracy], could n't be there. [Erika] loves to visit her Uncle [Pedro] on his farm. [Louis] and his brother [Pedro] went to see a baseball game on Friday and had a great time.
[{('Tracy', 'brother', 'Louis'): [('Tracy', 'brother', 'Pedro'), ('Pedro', 'brother', 'Louis')]}, {('Tracy', 'brother', 'Pedro'): [('Tracy', 'daughter', 'Erika'), ('Erika', 'uncle', 'Pedro')]}, {('Tracy', 'daughter', 'Erika'): [('Tracy', 'son', 'Kevin'), ('Kevin', 'sister', 'Erika')]}]
['son', 'sister', 'uncle', 'brother']