[Louis] took his sister [Tracy] out to dinner for her birthday. [Tracy] made a pizza for her son [Bernardo] and his brother [Aaron]. [Aaron] and her sister [Bettie] decided to take a trip to Mexico together.
('Bettie', 'Louis')
[Aaron] and her sister [Bettie] decided to take a trip to Mexico together. [Tracy] made a pizza for her son [Bernardo] and his brother [Aaron]. [Louis] took his sister [Tracy] out to dinner for her birthday.
[{('Bettie', 'uncle', 'Louis'): [('Bettie', 'mother', 'Tracy'), ('Tracy', 'brother', 'Louis')]}, {('Bettie', 'mother', 'Tracy'): [('Bettie', 'brother', 'Aaron'), ('Aaron', 'mother', 'Tracy')]}, {('Aaron', 'mother', 'Tracy'): [('Aaron', 'brother', 'Bernardo'), ('Bernardo', 'mother', 'Tracy')]}]
['brother', 'brother', 'mother', 'brother']