[Jennifer]'s brother [Dennis] was going to be the star in the new show. [Natalia] is taking a trip to see her sister [Jennifer].
('Natalia', 'Dennis')
[Natalia] is taking a trip to see her sister [Jennifer]. [Jennifer]'s brother [Dennis] was going to be the star in the new show.
[{('Natalia', 'brother', 'Dennis'): [('Natalia', 'sister', 'Jennifer'), ('Jennifer', 'brother', 'Dennis')]}]
['sister', 'brother']