[Allan] called his brother [John] on the phone. He wanted to go out for some beers. [John] went with his sister [Elsie] to get groceries and [Elsie]'s sister [Michelle] went with them. [Allan] took a vacation from his job to visit his mother [Marie] across the country for Mother's Day.
('Michelle', 'Marie')
[John] went with his sister [Elsie] to get groceries and [Elsie]'s sister [Michelle] went with them. [Allan] called his brother [John] on the phone. He wanted to go out for some beers. [Allan] took a vacation from his job to visit his mother [Marie] across the country for Mother's Day.
[{('Michelle', 'mother', 'Marie'): [('Michelle', 'sister', 'Elsie'), ('Elsie', 'mother', 'Marie')]}, {('Elsie', 'mother', 'Marie'): [('Elsie', 'brother', 'Allan'), ('Allan', 'mother', 'Marie')]}, {('Elsie', 'brother', 'Allan'): [('Elsie', 'brother', 'John'), ('John', 'brother', 'Allan')]}]
['sister', 'brother', 'brother', 'mother']