[Brandon] and his brother [Bobby] were rarely seen apart. [Gloria] and her brother [Brandon] were having a wonderful time at Disneyland. [Bobby] called his grandmother [Frances] and told him he needed a ride to school. [Frances] said she would come pick him up in a few minutes.
('Gloria', 'Frances')
[Gloria] and her brother [Brandon] were having a wonderful time at Disneyland. [Brandon] and his brother [Bobby] were rarely seen apart. [Bobby] called his grandmother [Frances] and told him he needed a ride to school. [Frances] said she would come pick him up in a few minutes.
[{('Gloria', 'grandmother', 'Frances'): [('Gloria', 'brother', 'Brandon'), ('Brandon', 'grandmother', 'Frances')]}, {('Brandon', 'grandmother', 'Frances'): [('Brandon', 'brother', 'Bobby'), ('Bobby', 'grandmother', 'Frances')]}]
['brother', 'brother', 'grandmother']