[Lynn] and her brother [Hugh] went for a walk in the garden with their mother [Frances]. [Frances]'s son [Francisco] did n't go because his allergies were bothering him.
('Francisco', 'Hugh')
[Lynn] and her brother [Hugh] went for a walk in the garden with their mother [Frances]. [Frances]'s son [Francisco] did n't go because his allergies were bothering him.
[{('Francisco', 'brother', 'Hugh'): [('Francisco', 'mother', 'Frances'), ('Frances', 'son', 'Hugh')]}, {('Frances', 'son', 'Hugh'): [('Frances', 'daughter', 'Lynn'), ('Lynn', 'brother', 'Hugh')]}]
['mother', 'daughter', 'brother']