[Jacob] bought his sister [Linda] a video game for her birthday. She said it was her favorite game and gave him a big hug. [Linda] is always around her brother [Jeff].
('Jacob', 'Jeff')
[Jacob] bought his sister [Linda] a video game for her birthday. She said it was her favorite game and gave him a big hug. [Linda] is always around her brother [Jeff].
[{('Jacob', 'brother', 'Jeff'): [('Jacob', 'sister', 'Linda'), ('Linda', 'brother', 'Jeff')]}]
['sister', 'brother']