[Aaron] was going to celebrate Christmas with his grandfather [Harold]. [Antonio] asked his daughter, [Bettie], and his son, [Aaron] if they were free to play chess. [Bettie] was busy because she had to help her brother, [Bernardo], with homework.
('Bernardo', 'Harold')
[Antonio] asked his daughter, [Bettie], and his son, [Aaron] if they were free to play chess. [Bettie] was busy because she had to help her brother, [Bernardo], with homework. [Aaron] was going to celebrate Christmas with his grandfather [Harold].
[{('Bernardo', 'grandfather', 'Harold'): [('Bernardo', 'sister', 'Bettie'), ('Bettie', 'grandfather', 'Harold')]}, {('Bettie', 'grandfather', 'Harold'): [('Bettie', 'brother', 'Aaron'), ('Aaron', 'grandfather', 'Harold')]}, {('Bettie', 'brother', 'Aaron'): [('Bettie', 'father', 'Antonio'), ('Antonio', 'son', 'Aaron')]}]
['sister', 'father', 'son', 'grandfather']