[Andrea]'s sister, [Janet], recently started acting. [Andrea] called her grandfather [Clarence] on the phone, and asked if he would be visiting her soon. [Clarence] told her he'd be over tomorrow.
('Janet', 'Clarence')
[Andrea]'s sister, [Janet], recently started acting. [Andrea] called her grandfather [Clarence] on the phone, and asked if he would be visiting her soon. [Clarence] told her he'd be over tomorrow.
[{('Janet', 'grandfather', 'Clarence'): [('Janet', 'sister', 'Andrea'), ('Andrea', 'grandfather', 'Clarence')]}]
['sister', 'grandfather']