[Shantel] wrote a nice letter to her grandson [Ronald]. [Robert] decided to take his son, [John], on a ski vacation. [John] and his sister [Lizzie] went to the movies to watch the newest superhero flick. [Ronald]'s father, [Robert], bought him some ice cream.
('Shantel', 'Lizzie')
[Shantel] wrote a nice letter to her grandson [Ronald]. [Ronald]'s father, [Robert], bought him some ice cream. [Robert] decided to take his son, [John], on a ski vacation. [John] and his sister [Lizzie] went to the movies to watch the newest superhero flick.
[{('Shantel', 'granddaughter', 'Lizzie'): [('Shantel', 'grandson', 'Ronald'), ('Ronald', 'sister', 'Lizzie')]}, {('Ronald', 'sister', 'Lizzie'): [('Ronald', 'brother', 'John'), ('John', 'sister', 'Lizzie')]}, {('Ronald', 'brother', 'John'): [('Ronald', 'father', 'Robert'), ('Robert', 'son', 'John')]}]
['grandson', 'father', 'son', 'sister']