[Helen]'s son [Glenn] and husband [James] all watched a horror movie together last night. [John] went to the baseball game with his brother [James].
('John', 'Glenn')
[John] went to the baseball game with his brother [James]. [Helen]'s son [Glenn] and husband [James] all watched a horror movie together last night.
[{('John', 'nephew', 'Glenn'): [('John', 'brother', 'James'), ('James', 'son', 'Glenn')]}, {('James', 'son', 'Glenn'): [('James', 'wife', 'Helen'), ('Helen', 'son', 'Glenn')]}]