[Harold] was playing catch with his son, [Louis]. [Marie] imitated her brother throwing the ball back and forth. [Elsie] loves her brother [Allan]. [Allan] loved his mother, [Marie], very much.
('Elsie', 'Harold')
[Elsie] loves her brother [Allan]. [Allan] loved his mother, [Marie], very much. [Harold] was playing catch with his son, [Louis]. [Marie] imitated her brother throwing the ball back and forth.
[{('Elsie', 'grandfather', 'Harold'): [('Elsie', 'mother', 'Marie'), ('Marie', 'father', 'Harold')]}, {('Elsie', 'mother', 'Marie'): [('Elsie', 'brother', 'Allan'), ('Allan', 'mother', 'Marie')]}, {('Marie', 'father', 'Harold'): [('Marie', 'brother', 'Louis'), ('Louis', 'father', 'Harold')]}]
['brother', 'mother', 'brother', 'father']