[Robert] is proud to be married to his loving wife [Ann]. [John] loved teaching his son, [Robert], baseball.
('John', 'Ann')
[John] loved teaching his son, [Robert], baseball. [Robert] is proud to be married to his loving wife [Ann].
[{('John', 'daughter-in-law', 'Ann'): [('John', 'son', 'Robert'), ('Robert', 'wife', 'Ann')]}]