[David] needed to go to the store. [David] asked her sister [Lena] for a ride. [Lynn] wanted to prank her brother [Wesley]. So she asked her sister [Lena] if she wanted to help her come up with a prank.
('Wesley', 'David')
[Lynn] wanted to prank her brother [Wesley]. So she asked her sister [Lena] if she wanted to help her come up with a prank. [David] needed to go to the store. [David] asked her sister [Lena] for a ride.
[{('Wesley', 'sister', 'David'): [('Wesley', 'sister', 'Lynn'), ('Lynn', 'sister', 'David')]}, {('Lynn', 'sister', 'David'): [('Lynn', 'sister', 'Lena'), ('Lena', 'sister', 'David')]}]
['sister', 'sister', 'sister']