[Lillian] took her son [Jerry] shopping for new school clothes. They had a good time. [Jerry] called his brother [Timothy] on the phone. He wanted to go out for some beers.
('Timothy', 'Lillian')
[Jerry] called his brother [Timothy] on the phone. He wanted to go out for some beers. [Lillian] took her son [Jerry] shopping for new school clothes. They had a good time.
[{('Timothy', 'mother', 'Lillian'): [('Timothy', 'brother', 'Jerry'), ('Jerry', 'mother', 'Lillian')]}]
['brother', 'mother']