[Jerry] and his wife, [Janet], were eating dinner. [Lillian], [Janet]'s mother, had prepared them a delicious meal.
('Jerry', 'Lillian')
[Jerry] and his wife, [Janet], were eating dinner. [Lillian], [Janet]'s mother, had prepared them a delicious meal.
[{('Jerry', 'mother-in-law', 'Lillian'): [('Jerry', 'wife', 'Janet'), ('Janet', 'mother', 'Lillian')]}]
['wife', 'mother']