[Nancy] was playing in the sandbox with her brother [Nicholas]. [Jeff]'s mother, [Nancy], was calling him for dinner.
('Jeff', 'Nicholas')
[Jeff]'s mother, [Nancy], was calling him for dinner. [Nancy] was playing in the sandbox with her brother [Nicholas].
[{('Jeff', 'uncle', 'Nicholas'): [('Jeff', 'mother', 'Nancy'), ('Nancy', 'brother', 'Nicholas')]}]
['mother', 'brother']