[Douglas] and his brother [John] got into a fight over who was the better basketball player. [Clarence] had a grandson [John] who went to college at his alma mater. [John] graduated with honors
('Clarence', 'Douglas')
[Clarence] had a grandson [John] who went to college at his alma mater. [John] graduated with honors [Douglas] and his brother [John] got into a fight over who was the better basketball player.
[{('Clarence', 'grandson', 'Douglas'): [('Clarence', 'grandson', 'John'), ('John', 'brother', 'Douglas')]}]
['grandson', 'brother']