[Hugh] bought his sister [Cindy] a video game for her birthday. She said it was her favorite game and gave him a big hug. [Joshua] took his mother, [Frances], and his sister, [Cindy], to the store.
('Hugh', 'Frances')
[Hugh] bought his sister [Cindy] a video game for her birthday. She said it was her favorite game and gave him a big hug. [Joshua] took his mother, [Frances], and his sister, [Cindy], to the store.
[{('Hugh', 'mother', 'Frances'): [('Hugh', 'brother', 'Joshua'), ('Joshua', 'mother', 'Frances')]}, {('Hugh', 'brother', 'Joshua'): [('Hugh', 'sister', 'Cindy'), ('Cindy', 'brother', 'Joshua')]}]
['sister', 'brother', 'mother']