[Robert] is [Franklin]'s Brother. [John] and his son [Robert] went to the skating rink.
('Franklin', 'John')
[Robert] is [Franklin]'s Brother. [John] and his son [Robert] went to the skating rink.
[{('Franklin', 'father', 'John'): [('Franklin', 'brother', 'Robert'), ('Robert', 'father', 'John')]}]