[Bettie] loves to watch stand up comedy with her brother. His name is [Bobby]. [Tracy] took her son [Aaron] to school and his grandfather [Harold] picked him up at then end of the school day. [Tracy] took her daughter [Bettie] to school during the cold winter morning.
('Bobby', 'Harold')
[Bettie] loves to watch stand up comedy with her brother. His name is [Bobby]. [Tracy] took her daughter [Bettie] to school during the cold winter morning. [Tracy] took her son [Aaron] to school and his grandfather [Harold] picked him up at then end of the school day.
[{('Bobby', 'grandfather', 'Harold'): [('Bobby', 'brother', 'Aaron'), ('Aaron', 'grandfather', 'Harold')]}, {('Bobby', 'brother', 'Aaron'): [('Bobby', 'sister', 'Bettie'), ('Bettie', 'brother', 'Aaron')]}, {('Bettie', 'brother', 'Aaron'): [('Bettie', 'mother', 'Tracy'), ('Tracy', 'son', 'Aaron')]}]
['sister', 'mother', 'son', 'grandfather']