[Lillian] made a pizza for her son [Timothy] and his brother [Jerry].
('Jerry', 'Lillian')
[Lillian] made a pizza for her son [Timothy] and his brother [Jerry].
[{('Jerry', 'mother', 'Lillian'): [('Jerry', 'brother', 'Timothy'), ('Timothy', 'mother', 'Lillian')]}]
['brother', 'mother']