[Clarence] took his grandson [Milton] to the lake so they could feed the ducks. [Dennis] and his brother [Milton] decided to play paintball on Saturday.
('Clarence', 'Dennis')
[Clarence] took his grandson [Milton] to the lake so they could feed the ducks. [Dennis] and his brother [Milton] decided to play paintball on Saturday.
[{('Clarence', 'grandson', 'Dennis'): [('Clarence', 'grandson', 'Milton'), ('Milton', 'brother', 'Dennis')]}]
['grandson', 'brother']