[Francisco] and his wife [Cindy] went to a baseball game today. [Cindy]'s son, [Richard], went away for the weekend. He was going to spend it at his grandmother [Frances]'s house.
('Francisco', 'Frances')
[Francisco] and his wife [Cindy] went to a baseball game today. [Cindy]'s son, [Richard], went away for the weekend. He was going to spend it at his grandmother [Frances]'s house.
[{('Francisco', 'mother-in-law', 'Frances'): [('Francisco', 'wife', 'Cindy'), ('Cindy', 'mother', 'Frances')]}, {('Cindy', 'mother', 'Frances'): [('Cindy', 'son', 'Richard'), ('Richard', 'grandmother', 'Frances')]}]
['wife', 'son', 'grandmother']