[Marie] took her brothers, [Bobby] and [Michael], to the gift store. The brothers wanted to buy their grandmother, [Frances], a birthday present.
('Marie', 'Frances')
[Marie] took her brothers, [Bobby] and [Michael], to the gift store. The brothers wanted to buy their grandmother, [Frances], a birthday present.
[{('Marie', 'grandmother', 'Frances'): [('Marie', 'brother', 'Michael'), ('Michael', 'grandmother', 'Frances')]}, {('Marie', 'brother', 'Michael'): [('Marie', 'brother', 'Bobby'), ('Bobby', 'brother', 'Michael')]}]
['brother', 'brother', 'grandmother']