[Douglas] and his father [George] played video games all day last Saturday. [Douglas] got mad at his brother [Timothy] after he stole his pretzels.
('Timothy', 'George')
[Douglas] got mad at his brother [Timothy] after he stole his pretzels. [Douglas] and his father [George] played video games all day last Saturday.
[{('Timothy', 'father', 'George'): [('Timothy', 'brother', 'Douglas'), ('Douglas', 'father', 'George')]}]
['brother', 'father']