[Dorothy] took her brother [Robert] and her daughter [Cheryl] to the exhibition [Shantel]'s two sons, [Louis] and [Robert] are both attending college in the fall.
('Louis', 'Cheryl')
[Shantel]'s two sons, [Louis] and [Robert] are both attending college in the fall. [Dorothy] took her brother [Robert] and her daughter [Cheryl] to the exhibition
[{('Louis', 'niece', 'Cheryl'): [('Louis', 'sister', 'Dorothy'), ('Dorothy', 'daughter', 'Cheryl')]}, {('Louis', 'sister', 'Dorothy'): [('Louis', 'brother', 'Robert'), ('Robert', 'sister', 'Dorothy')]}, {('Louis', 'brother', 'Robert'): [('Louis', 'mother', 'Shantel'), ('Shantel', 'son', 'Robert')]}]
['mother', 'son', 'sister', 'daughter']