[Cindy] took her son [Richard] on a trip. They went to see [Cindy]'s mother, [Frances]. [Richard] and his sister [Carrie] stood in line at the fair.
('Carrie', 'Frances')
[Richard] and his sister [Carrie] stood in line at the fair. [Cindy] took her son [Richard] on a trip. They went to see [Cindy]'s mother, [Frances].
[{('Carrie', 'grandmother', 'Frances'): [('Carrie', 'mother', 'Cindy'), ('Cindy', 'mother', 'Frances')]}, {('Carrie', 'mother', 'Cindy'): [('Carrie', 'brother', 'Richard'), ('Richard', 'mother', 'Cindy')]}]
['brother', 'mother', 'mother']