[James] took his niece [Loretta] to the park to walk her dog. [Bret]'s sister, [Loretta], participated in the dance contest. [John] was delighted to watch his son [Bret] steal third base in the Championship baseball game.
('John', 'James')
[John] was delighted to watch his son [Bret] steal third base in the Championship baseball game. [Bret]'s sister, [Loretta], participated in the dance contest. [James] took his niece [Loretta] to the park to walk her dog.
[{('John', 'brother', 'James'): [('John', 'daughter', 'Loretta'), ('Loretta', 'uncle', 'James')]}, {('John', 'daughter', 'Loretta'): [('John', 'son', 'Bret'), ('Bret', 'sister', 'Loretta')]}]