[Jeff] 'grandfather [Clarence] could n't figure how to turn the television on so [Jeff] helped him. [Jacob] and his brother [Jeff] were playing tag in the park.
('Jacob', 'Clarence')
[Jacob] and his brother [Jeff] were playing tag in the park. [Jeff] 'grandfather [Clarence] could n't figure how to turn the television on so [Jeff] helped him.
[{('Jacob', 'grandfather', 'Clarence'): [('Jacob', 'brother', 'Jeff'), ('Jeff', 'grandfather', 'Clarence')]}]
['brother', 'grandfather']