[April]'s sister [Janet] informed her than [April]'s grandmother [Ashley] had slipped in the kitchen and injured her ankle.
('Janet', 'Ashley')
[April]'s sister [Janet] informed her than [April]'s grandmother [Ashley] had slipped in the kitchen and injured her ankle.
[{('Janet', 'grandmother', 'Ashley'): [('Janet', 'sister', 'April'), ('April', 'grandmother', 'Ashley')]}]
['sister', 'grandmother']