[George] is taking his daughter [April] out for lunch. [George]'s sister [Theresa] asked him for some help planting her garden.
('Theresa', 'April')
[George]'s sister [Theresa] asked him for some help planting her garden. [George] is taking his daughter [April] out for lunch.
[{('Theresa', 'niece', 'April'): [('Theresa', 'brother', 'George'), ('George', 'daughter', 'April')]}]
['brother', 'daughter']