[Kevin] love his brother [Aaron]. They are always playing together. [Erika] and her brother [Aaron] were helping their mother [Tracy] set the dinner table. Just then, the doorbell rang and [Tracy] answered it as she was expecting her father [Harold].
('Harold', 'Kevin')
[Erika] and her brother [Aaron] were helping their mother [Tracy] set the dinner table. Just then, the doorbell rang and [Tracy] answered it as she was expecting her father [Harold]. [Kevin] love his brother [Aaron]. They are always playing together.
[{('Harold', 'grandson', 'Kevin'): [('Harold', 'granddaughter', 'Erika'), ('Erika', 'brother', 'Kevin')]}, {('Erika', 'brother', 'Kevin'): [('Erika', 'mother', 'Tracy'), ('Tracy', 'son', 'Kevin')]}, {('Tracy', 'son', 'Kevin'): [('Tracy', 'son', 'Aaron'), ('Aaron', 'brother', 'Kevin')]}]
['granddaughter', 'mother', 'son', 'brother']