[Irvin] took [Theodore] is brother home, he later visited his brother [Chris] at the hospital. [Tina] and [Theodore] had a picnic at the park. They had sandwiches and salad.
('Chris', 'Tina')
[Irvin] took [Theodore] is brother home, he later visited his brother [Chris] at the hospital. [Tina] and [Theodore] had a picnic at the park. They had sandwiches and salad.
[{('Chris', 'sister', 'Tina'): [('Chris', 'brother', 'Theodore'), ('Theodore', 'sister', 'Tina')]}, {('Chris', 'brother', 'Theodore'): [('Chris', 'brother', 'Irvin'), ('Irvin', 'brother', 'Theodore')]}]
['brother', 'brother', 'sister']