[Allan]'s grandfather, [Harold], took the boy to the store to buy some new shoes. [Harold]'s daughter, [Dorothy], was busy caring for her son, [Jeffrey], and could n't take his call. [Marie] took her son [Allan] to the football game.
('Marie', 'Jeffrey')
[Marie] took her son [Allan] to the football game. [Allan]'s grandfather, [Harold], took the boy to the store to buy some new shoes. [Harold]'s daughter, [Dorothy], was busy caring for her son, [Jeffrey], and could n't take his call.
[{('Marie', 'nephew', 'Jeffrey'): [('Marie', 'sister', 'Dorothy'), ('Dorothy', 'son', 'Jeffrey')]}, {('Marie', 'sister', 'Dorothy'): [('Marie', 'father', 'Harold'), ('Harold', 'daughter', 'Dorothy')]}, {('Marie', 'father', 'Harold'): [('Marie', 'son', 'Allan'), ('Allan', 'grandfather', 'Harold')]}]
['son', 'grandfather', 'daughter', 'son']