[Robert] and his sister [Linda] are going for a walk. [Ashley] has a granddaughter called [Linda] who is her favourite.
('Robert', 'Ashley')
[Robert] and his sister [Linda] are going for a walk. [Ashley] has a granddaughter called [Linda] who is her favourite.
[{('Robert', 'grandmother', 'Ashley'): [('Robert', 'sister', 'Linda'), ('Linda', 'grandmother', 'Ashley')]}]
['sister', 'grandmother']