[Lorraine]'s brother [Jacob] was going to be the star in the new show. [Jacob] made dinner reservations for his sister [Heidi].
('Lorraine', 'Heidi')
[Lorraine]'s brother [Jacob] was going to be the star in the new show. [Jacob] made dinner reservations for his sister [Heidi].
[{('Lorraine', 'sister', 'Heidi'): [('Lorraine', 'brother', 'Jacob'), ('Jacob', 'sister', 'Heidi')]}]
['brother', 'sister']