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