[John] braided his sister [Elsie]'s hair. [Allan] and her sister [Elsie] decided to take a trip to Mexico together. [Marie] had to pick her son [Allan] up from school because the schools' bus was broke down. [Marie]'s son, [Allan], went with her to the store to buy candy for Halloween.
('John', 'Allan')
[John] braided his sister [Elsie]'s hair. [Allan] and her sister [Elsie] decided to take a trip to Mexico together. [Marie] had to pick her son [Allan] up from school because the schools' bus was broke down. [Marie]'s son, [Allan], went with her to the store to buy candy for Halloween.
[{('John', 'brother', 'Allan'): [('John', 'mother', 'Marie'), ('Marie', 'son', 'Allan')]}, {('John', 'mother', 'Marie'): [('John', 'sister', 'Elsie'), ('Elsie', 'mother', 'Marie')]}, {('Elsie', 'mother', 'Marie'): [('Elsie', 'brother', 'Allan'), ('Allan', 'mother', 'Marie')]}]
['sister', 'brother', 'mother', 'son']