[Dale] went to the restaurant to meet his sister, [Nancy], for dinner. [Nancy] was there, and as a surprise, her daughter [Linda] came along too.
('Dale', 'Linda')
[Dale] went to the restaurant to meet his sister, [Nancy], for dinner. [Nancy] was there, and as a surprise, her daughter [Linda] came along too.
[{('Dale', 'niece', 'Linda'): [('Dale', 'sister', 'Nancy'), ('Nancy', 'daughter', 'Linda')]}]
['sister', 'daughter']