[David] baked a cake for her son [Johnson]. [Cindy] picked up her brother [Wesley] from the airport. Then they went to her sister [David]'s house for lunch.
('Wesley', 'Johnson')
[Cindy] picked up her brother [Wesley] from the airport. Then they went to her sister [David]'s house for lunch. [David] baked a cake for her son [Johnson].
[{('Wesley', 'nephew', 'Johnson'): [('Wesley', 'sister', 'David'), ('David', 'son', 'Johnson')]}, {('Wesley', 'sister', 'David'): [('Wesley', 'sister', 'Cindy'), ('Cindy', 'sister', 'David')]}]
['sister', 'sister', 'son']