[Cindy] took her son [Pete] to the park. [Carrie] was mad at her brother [Pete], because [Pete] had called her fat. [Leonard] was going to meet his wife, [Carrie], for lunch.
('Leonard', 'Cindy')
[Leonard] was going to meet his wife, [Carrie], for lunch. [Carrie] was mad at her brother [Pete], because [Pete] had called her fat. [Cindy] took her son [Pete] to the park.
[{('Leonard', 'mother-in-law', 'Cindy'): [('Leonard', 'wife', 'Carrie'), ('Carrie', 'mother', 'Cindy')]}, {('Carrie', 'mother', 'Cindy'): [('Carrie', 'brother', 'Pete'), ('Pete', 'mother', 'Cindy')]}]
['wife', 'brother', 'mother']