[John]'s son is [Brent]. [Brent] and his father always go fishing together on Sundays and have a great time together. [Brent] is proud to be married to his loving wife [Margaret].
('John', 'Margaret')
[John]'s son is [Brent]. [Brent] and his father always go fishing together on Sundays and have a great time together. [Brent] is proud to be married to his loving wife [Margaret].
[{('John', 'daughter-in-law', 'Margaret'): [('John', 'son', 'Brent'), ('Brent', 'wife', 'Margaret')]}]