[Tracy] invited her father [Harold] to dinner. [Louis]'s son is [Paul]. [Paul] and his father always go fishing together on Sundays and have a great time together. [Paul] bought his sister [Nettie] a video game for her birthday. She said it was her favorite game and gave him a big hug. [Nettie] is n't very close to her grandfather, [Harold]. They're like strangers.
('Louis', 'Tracy')
[Louis]'s son is [Paul]. [Paul] and his father always go fishing together on Sundays and have a great time together. [Paul] bought his sister [Nettie] a video game for her birthday. She said it was her favorite game and gave him a big hug. [Nettie] is n't very close to her grandfather, [Harold]. They're like strangers. [Tracy] invited her father [Harold] to dinner.
[{('Louis', 'sister', 'Tracy'): [('Louis', 'father', 'Harold'), ('Harold', 'daughter', 'Tracy')]}, {('Louis', 'father', 'Harold'): [('Louis', 'daughter', 'Nettie'), ('Nettie', 'grandfather', 'Harold')]}, {('Louis', 'daughter', 'Nettie'): [('Louis', 'son', 'Paul'), ('Paul', 'sister', 'Nettie')]}]
['son', 'sister', 'grandfather', 'daughter']