[Heidi] took her sister [Lorraine] out for dinner to celebrate her birthday. [Clarence] and his granddaughter [Heidi] like to play putt putt golf together.
('Lorraine', 'Clarence')
[Heidi] took her sister [Lorraine] out for dinner to celebrate her birthday. [Clarence] and his granddaughter [Heidi] like to play putt putt golf together.
[{('Lorraine', 'grandfather', 'Clarence'): [('Lorraine', 'sister', 'Heidi'), ('Heidi', 'grandfather', 'Clarence')]}]
['sister', 'grandfather']