[Chris] and his wife, [Mildred], prepared dinner for [Chris]'s sister [Martha]. Although [Martha]'s father [Wesley] would have preferred to eat out at a restaurant.
('Mildred', 'Wesley')
[Chris] and his wife, [Mildred], prepared dinner for [Chris]'s sister [Martha]. Although [Martha]'s father [Wesley] would have preferred to eat out at a restaurant.
[{('Mildred', 'father-in-law', 'Wesley'): [('Mildred', 'husband', 'Chris'), ('Chris', 'father', 'Wesley')]}, {('Chris', 'father', 'Wesley'): [('Chris', 'sister', 'Martha'), ('Martha', 'father', 'Wesley')]}]
['husband', 'sister', 'father']