[Theresa] is one of my favorite students. She is the younger sister of [Nicholas], who I taught last year, [Theresa] and her father [Clarence] went to the park. They had a wonderful time there, feeding the ducks.
('Nicholas', 'Clarence')
[Theresa] is one of my favorite students. She is the younger sister of [Nicholas], who I taught last year, [Theresa] and her father [Clarence] went to the park. They had a wonderful time there, feeding the ducks.
[{('Nicholas', 'father', 'Clarence'): [('Nicholas', 'sister', 'Theresa'), ('Theresa', 'father', 'Clarence')]}]
['sister', 'father']