[Pete] decided to paint the house while his wife [Natasha] visited her sister [Wilhelmina] and mother [Cindy] in the city.
('Pete', 'Cindy')
[Pete] decided to paint the house while his wife [Natasha] visited her sister [Wilhelmina] and mother [Cindy] in the city.
[{('Pete', 'mother-in-law', 'Cindy'): [('Pete', 'wife', 'Natasha'), ('Natasha', 'mother', 'Cindy')]}, {('Natasha', 'mother', 'Cindy'): [('Natasha', 'sister', 'Wilhelmina'), ('Wilhelmina', 'mother', 'Cindy')]}]
['wife', 'sister', 'mother']