[Lena] asked her son [Irvin] to help her fix her television. [Irvin] and his father, [Wesley], went to the garden shop. [Wesley] planned to by his mother, [Frances], some new bedding plants.
('Lena', 'Frances')
[Lena] asked her son [Irvin] to help her fix her television. [Irvin] and his father, [Wesley], went to the garden shop. [Wesley] planned to by his mother, [Frances], some new bedding plants.
[{('Lena', 'mother', 'Frances'): [('Lena', 'son', 'Irvin'), ('Irvin', 'grandmother', 'Frances')]}, {('Irvin', 'grandmother', 'Frances'): [('Irvin', 'father', 'Wesley'), ('Wesley', 'mother', 'Frances')]}]
['son', 'father', 'mother']