[John] is the loving father of [Ann]. [John]'s father, [Roy], is also [Ann]'s dear grandfather.
('Ann', 'Roy')
[John] is the loving father of [Ann]. [John]'s father, [Roy], is also [Ann]'s dear grandfather.
[{('Ann', 'grandfather', 'Roy'): [('Ann', 'father', 'John'), ('John', 'father', 'Roy')]}]