[John] and his sister [Lois] stood in line at the fair. [Lois] bought her son [Danny] a basketball for his birthday.
('Danny', 'John')
[Lois] bought her son [Danny] a basketball for his birthday. [John] and his sister [Lois] stood in line at the fair.
[{('Danny', 'uncle', 'John'): [('Danny', 'mother', 'Lois'), ('Lois', 'brother', 'John')]}]