[Lena] cooked her son [Irvin] his favorite meal yesterday because it was his birthday. [Theodore] just got married to [Pamela]. He's very happy with his new wife. [Irvin] and her sister [Pamela] decided to take a trip to Mexico together.
('Theodore', 'Lena')
[Theodore] just got married to [Pamela]. He's very happy with his new wife. [Irvin] and her sister [Pamela] decided to take a trip to Mexico together. [Lena] cooked her son [Irvin] his favorite meal yesterday because it was his birthday.
[{('Theodore', 'mother-in-law', 'Lena'): [('Theodore', 'wife', 'Pamela'), ('Pamela', 'mother', 'Lena')]}, {('Pamela', 'mother', 'Lena'): [('Pamela', 'brother', 'Irvin'), ('Irvin', 'mother', 'Lena')]}]
['wife', 'brother', 'mother']