[Dennis] and his wife, [Emily], get along well, except for one thing. [Dennis] thinks [Emily]'s mother, [Amy], stops by to visit them far too often.
('Dennis', 'Amy')
[Dennis] and his wife, [Emily], get along well, except for one thing. [Dennis] thinks [Emily]'s mother, [Amy], stops by to visit them far too often.
[{('Dennis', 'mother-in-law', 'Amy'): [('Dennis', 'wife', 'Emily'), ('Emily', 'mother', 'Amy')]}]
['wife', 'mother']