[Lena] taught her son [Irvin] how to mow the lawn once he was old enough. [Pamela] asked [Lena], her mother, to teach her how to mow the lawn too. [Frances] was so proud of her granddaughter, [Pamela], excelling in school.
('Frances', 'Irvin')
[Frances] was so proud of her granddaughter, [Pamela], excelling in school. [Lena] taught her son [Irvin] how to mow the lawn once he was old enough. [Pamela] asked [Lena], her mother, to teach her how to mow the lawn too.
[{('Frances', 'grandson', 'Irvin'): [('Frances', 'granddaughter', 'Pamela'), ('Pamela', 'brother', 'Irvin')]}, {('Pamela', 'brother', 'Irvin'): [('Pamela', 'mother', 'Lena'), ('Lena', 'son', 'Irvin')]}]
['granddaughter', 'mother', 'son']