[Harold] took his grandson [John] to the store to buy some new books. [Robert] and his son [Allan] went to the skating rink. [Elsie] is the proud daughter of [Robert]. [Elsie] also has a brother named [John].
('Allan', 'Harold')
[Robert] and his son [Allan] went to the skating rink. [Elsie] is the proud daughter of [Robert]. [Elsie] also has a brother named [John]. [Harold] took his grandson [John] to the store to buy some new books.
[{('Allan', 'grandfather', 'Harold'): [('Allan', 'sister', 'Elsie'), ('Elsie', 'grandfather', 'Harold')]}, {('Elsie', 'grandfather', 'Harold'): [('Elsie', 'brother', 'John'), ('John', 'grandfather', 'Harold')]}, {('Allan', 'sister', 'Elsie'): [('Allan', 'father', 'Robert'), ('Robert', 'daughter', 'Elsie')]}]
['father', 'daughter', 'brother', 'grandfather']