[Elsie] and her mother [Marie] attended a play at the theater. [Pedro] went to visit his sister [Marie] to the hospital last week. [Elsie]'s grandfather [Harold] was n't feeling well after eating at the restaurant. [Pedro] is happily married to his wife. Her name is [Dorothy].
('Dorothy', 'Harold')
[Pedro] is happily married to his wife. Her name is [Dorothy]. [Pedro] went to visit his sister [Marie] to the hospital last week. [Elsie] and her mother [Marie] attended a play at the theater. [Elsie]'s grandfather [Harold] was n't feeling well after eating at the restaurant.
[{('Dorothy', 'father-in-law', 'Harold'): [('Dorothy', 'husband', 'Pedro'), ('Pedro', 'father', 'Harold')]}, {('Pedro', 'father', 'Harold'): [('Pedro', 'sister', 'Marie'), ('Marie', 'father', 'Harold')]}, {('Marie', 'father', 'Harold'): [('Marie', 'daughter', 'Elsie'), ('Elsie', 'grandfather', 'Harold')]}]
['husband', 'sister', 'daughter', 'grandfather']