[Douglas] went to visit his grandmother [Ashley] on Sunday and his brother [John] stayed home because he had a cold.
('John', 'Ashley')
[Douglas] went to visit his grandmother [Ashley] on Sunday and his brother [John] stayed home because he had a cold.
[{('John', 'grandmother', 'Ashley'): [('John', 'brother', 'Douglas'), ('Douglas', 'grandmother', 'Ashley')]}]
['brother', 'grandmother']