[Felicia] went on a trip with her grandfather, [James] and his wife, [Frances]. [Felicia]'s brother, [Don], had to work and could n't join her.
('Frances', 'Don')
[Felicia] went on a trip with her grandfather, [James] and his wife, [Frances]. [Felicia]'s brother, [Don], had to work and could n't join her.
[{('Frances', 'grandson', 'Don'): [('Frances', 'husband', 'James'), ('James', 'grandson', 'Don')]}, {('James', 'grandson', 'Don'): [('James', 'granddaughter', 'Felicia'), ('Felicia', 'brother', 'Don')]}]
['husband', 'granddaughter', 'brother']