[Emily] gave her grandfather, [Clarence], a hug when she saw him. [Michael] went to visit his sister [Emily] to the hospital last week.
('Michael', 'Clarence')
[Michael] went to visit his sister [Emily] to the hospital last week. [Emily] gave her grandfather, [Clarence], a hug when she saw him.
[{('Michael', 'grandfather', 'Clarence'): [('Michael', 'sister', 'Emily'), ('Emily', 'grandfather', 'Clarence')]}]
['sister', 'grandfather']