[Jacob] played catch with his son [William]. Later, he went out to eat with his own father, [Roy]
('William', 'Roy')
[Jacob] played catch with his son [William]. Later, he went out to eat with his own father, [Roy]
[{('William', 'grandfather', 'Roy'): [('William', 'father', 'Jacob'), ('Jacob', 'father', 'Roy')]}]