[Tracy] ca n't wait to go to Australia with her nephew [Samuel]. [Louis] does not know he has a son named [Samuel]. [Dorothy] took her younger sister [Tracy] to the carnival last weekend. [Paul] and his father [Louis] played video games all day last Saturday.
('Paul', 'Dorothy')
[Paul] and his father [Louis] played video games all day last Saturday. [Louis] does not know he has a son named [Samuel]. [Tracy] ca n't wait to go to Australia with her nephew [Samuel]. [Dorothy] took her younger sister [Tracy] to the carnival last weekend.
[{('Paul', 'aunt', 'Dorothy'): [('Paul', 'father', 'Louis'), ('Louis', 'sister', 'Dorothy')]}, {('Louis', 'sister', 'Dorothy'): [('Louis', 'sister', 'Tracy'), ('Tracy', 'sister', 'Dorothy')]}, {('Louis', 'sister', 'Tracy'): [('Louis', 'son', 'Samuel'), ('Samuel', 'aunt', 'Tracy')]}]
['father', 'son', 'aunt', 'sister']