[Wayne] called his brother [Pete] on the phone. He wanted to go out for some beers. [Wayne]'s grandfather is [James]. [Richard] and his brother [Pete] were rarely seen apart.
('Richard', 'James')
[Richard] and his brother [Pete] were rarely seen apart. [Wayne] called his brother [Pete] on the phone. He wanted to go out for some beers. [Wayne]'s grandfather is [James].
[{('Richard', 'grandfather', 'James'): [('Richard', 'brother', 'Wayne'), ('Wayne', 'grandfather', 'James')]}, {('Richard', 'brother', 'Wayne'): [('Richard', 'brother', 'Pete'), ('Pete', 'brother', 'Wayne')]}]
['brother', 'brother', 'grandfather']