[Pedro] wanted to get a good gift for his sister, [Marie] [Louis] and his sister [Tracy] took their father out to eat for his birthday. They had a great time. [Emma] loves to visit her Uncle [Pedro] on his farm. [Tracy] wants to make a special meal for her daughter [Emma]'s birthday.
('Louis', 'Marie')
[Louis] and his sister [Tracy] took their father out to eat for his birthday. They had a great time. [Tracy] wants to make a special meal for her daughter [Emma]'s birthday. [Emma] loves to visit her Uncle [Pedro] on his farm. [Pedro] wanted to get a good gift for his sister, [Marie]
[{('Louis', 'sister', 'Marie'): [('Louis', 'sister', 'Tracy'), ('Tracy', 'sister', 'Marie')]}, {('Tracy', 'sister', 'Marie'): [('Tracy', 'brother', 'Pedro'), ('Pedro', 'sister', 'Marie')]}, {('Tracy', 'brother', 'Pedro'): [('Tracy', 'daughter', 'Emma'), ('Emma', 'uncle', 'Pedro')]}]
['sister', 'daughter', 'uncle', 'sister']