[David] took her sister [Cindy] out for dinner to celebrate her birthday. [Wesley]'s sister [David] wanted [Wesley]'s daughter, [Tina], to go with them to the theatre.
('Cindy', 'Tina')
[David] took her sister [Cindy] out for dinner to celebrate her birthday. [Wesley]'s sister [David] wanted [Wesley]'s daughter, [Tina], to go with them to the theatre.
[{('Cindy', 'niece', 'Tina'): [('Cindy', 'brother', 'Wesley'), ('Wesley', 'daughter', 'Tina')]}, {('Cindy', 'brother', 'Wesley'): [('Cindy', 'sister', 'David'), ('David', 'brother', 'Wesley')]}]
['sister', 'brother', 'daughter']