[Nicolas]'s sister, [Belva], bought movie tickets at a discount rate. [Belva] is looking for a good gift for her sister [June].
('Nicolas', 'June')
[Nicolas]'s sister, [Belva], bought movie tickets at a discount rate. [Belva] is looking for a good gift for her sister [June].
[{('Nicolas', 'sister', 'June'): [('Nicolas', 'sister', 'Belva'), ('Belva', 'sister', 'June')]}]
['sister', 'sister']