[Glen] likes it when his mother, [Amy], plays the flute. [Amy] learned this skill from her mother, [Ashley].
('Glen', 'Ashley')
[Glen] likes it when his mother, [Amy], plays the flute. [Amy] learned this skill from her mother, [Ashley].
[{('Glen', 'grandmother', 'Ashley'): [('Glen', 'mother', 'Amy'), ('Amy', 'mother', 'Ashley')]}]
['mother', 'mother']