[James] loved taking his grandson [Michael] for ice cream. [Bobby] and his brother [Michael] had a fight. They did n't speak to each other for a whole week afterwards. [Bobby] took his sister [Marie] to the movies with him to see the new Star Wars film.
('James', 'Marie')
[James] loved taking his grandson [Michael] for ice cream. [Bobby] and his brother [Michael] had a fight. They did n't speak to each other for a whole week afterwards. [Bobby] took his sister [Marie] to the movies with him to see the new Star Wars film.
[{('James', 'granddaughter', 'Marie'): [('James', 'grandson', 'Bobby'), ('Bobby', 'sister', 'Marie')]}, {('James', 'grandson', 'Bobby'): [('James', 'grandson', 'Michael'), ('Michael', 'brother', 'Bobby')]}]
['grandson', 'brother', 'sister']