[Amy], [Mary]'s mother, was eager to plan a trip with her so she asked her brother, [Glen], for advice.
('Amy', 'Glen')
[Amy], [Mary]'s mother, was eager to plan a trip with her so she asked her brother, [Glen], for advice.
[{('Amy', 'son', 'Glen'): [('Amy', 'daughter', 'Mary'), ('Mary', 'brother', 'Glen')]}]
['daughter', 'brother']