[Mildred] took her mother, [Lena], out for lunch. [Pamela] asked her sister [Tina] to hurry up and get off the phone. [Pamela]'s sister [Mildred] told her to wait her turn and be more patient.
('Tina', 'Lena')
[Pamela] asked her sister [Tina] to hurry up and get off the phone. [Pamela]'s sister [Mildred] told her to wait her turn and be more patient. [Mildred] took her mother, [Lena], out for lunch.
[{('Tina', 'mother', 'Lena'): [('Tina', 'sister', 'Pamela'), ('Pamela', 'mother', 'Lena')]}, {('Pamela', 'mother', 'Lena'): [('Pamela', 'sister', 'Mildred'), ('Mildred', 'mother', 'Lena')]}]
['sister', 'sister', 'mother']