[Shantel] read her son [Louis] a bedtime story every night. [Shantel] and her husband [Harold] always make sure they have a date night every month. [Robert] went to the park with his father, [Harold]. [Louis] and his sister [Tracy] went to the ice skating rink. [Louis] fell down and [Tracy] laughed at him.
('Robert', 'Tracy')
[Robert] went to the park with his father, [Harold]. [Shantel] and her husband [Harold] always make sure they have a date night every month. [Shantel] read her son [Louis] a bedtime story every night. [Louis] and his sister [Tracy] went to the ice skating rink. [Louis] fell down and [Tracy] laughed at him.
[{('Robert', 'sister', 'Tracy'): [('Robert', 'father', 'Harold'), ('Harold', 'daughter', 'Tracy')]}, {('Harold', 'daughter', 'Tracy'): [('Harold', 'wife', 'Shantel'), ('Shantel', 'daughter', 'Tracy')]}, {('Shantel', 'daughter', 'Tracy'): [('Shantel', 'son', 'Louis'), ('Louis', 'sister', 'Tracy')]}]
['father', 'wife', 'son', 'sister']