[Clarence] is taking his daughter [Nancy] out for lunch at her favorite restaurant. [Nancy] has been waiting around all day for her son, [Jeff].
('Clarence', 'Jeff')
[Clarence] is taking his daughter [Nancy] out for lunch at her favorite restaurant. [Nancy] has been waiting around all day for her son, [Jeff].
[{('Clarence', 'grandson', 'Jeff'): [('Clarence', 'daughter', 'Nancy'), ('Nancy', 'son', 'Jeff')]}]
['daughter', 'son']