[Louis] and his sister [Tracy] went to the ice skating rink. [Louis] fell down and [Tracy] laughed at him. [Heather] is [Pedro] 'daughter and they go shopping at least twice a week together. [Marie] loves her brother [Louis]. [Marie] is n't too fond of her brother [Pedro] though.
('Heather', 'Tracy')
[Heather] is [Pedro] 'daughter and they go shopping at least twice a week together. [Marie] loves her brother [Louis]. [Marie] is n't too fond of her brother [Pedro] though. [Louis] and his sister [Tracy] went to the ice skating rink. [Louis] fell down and [Tracy] laughed at him.
[{('Heather', 'aunt', 'Tracy'): [('Heather', 'father', 'Pedro'), ('Pedro', 'sister', 'Tracy')]}, {('Pedro', 'sister', 'Tracy'): [('Pedro', 'sister', 'Marie'), ('Marie', 'sister', 'Tracy')]}, {('Marie', 'sister', 'Tracy'): [('Marie', 'brother', 'Louis'), ('Louis', 'sister', 'Tracy')]}]
['father', 'sister', 'brother', 'sister']