[Frances] was over at her grandson [Richard]'s house for the holidays. [Pete], [Richard]'s brother, was n't able to make it. [James] prepared romantic dinner for Valentine's Day for his wife, [Frances].
('James', 'Pete')
[James] prepared romantic dinner for Valentine's Day for his wife, [Frances]. [Frances] was over at her grandson [Richard]'s house for the holidays. [Pete], [Richard]'s brother, was n't able to make it.
[{('James', 'grandson', 'Pete'): [('James', 'wife', 'Frances'), ('Frances', 'grandson', 'Pete')]}, {('Frances', 'grandson', 'Pete'): [('Frances', 'grandson', 'Richard'), ('Richard', 'brother', 'Pete')]}]
['wife', 'grandson', 'brother']