[Timothy] and his brother [Jerry] were rough-housing. [Lillian], [Jerry]'s mother, called from the other room and told them to play nice.
('Timothy', 'Lillian')
[Timothy] and his brother [Jerry] were rough-housing. [Lillian], [Jerry]'s mother, called from the other room and told them to play nice.
[{('Timothy', 'mother', 'Lillian'): [('Timothy', 'brother', 'Jerry'), ('Jerry', 'mother', 'Lillian')]}]
['brother', 'mother']