[Heather] took her mother [Dorothy] to the doctor. Later, [Dorothy] told her sister [Beverly] what the doctor said. [Cheryl] asked her two sisters [Heather] and [Rebecca] if they were free for coffee this coming weekend.
('Rebecca', 'Beverly')
[Cheryl] asked her two sisters [Heather] and [Rebecca] if they were free for coffee this coming weekend. [Heather] took her mother [Dorothy] to the doctor. Later, [Dorothy] told her sister [Beverly] what the doctor said.
[{('Rebecca', 'aunt', 'Beverly'): [('Rebecca', 'mother', 'Dorothy'), ('Dorothy', 'sister', 'Beverly')]}, {('Rebecca', 'mother', 'Dorothy'): [('Rebecca', 'sister', 'Cheryl'), ('Cheryl', 'mother', 'Dorothy')]}, {('Cheryl', 'mother', 'Dorothy'): [('Cheryl', 'sister', 'Heather'), ('Heather', 'mother', 'Dorothy')]}]
['sister', 'sister', 'mother', 'sister']