[Suanne] went grocery shopping with her mother, [Lois]. [Lois]'s father [Roy] asked them to pick up milk for him.
('Suanne', 'Roy')
[Suanne] went grocery shopping with her mother, [Lois]. [Lois]'s father [Roy] asked them to pick up milk for him.
[{('Suanne', 'grandfather', 'Roy'): [('Suanne', 'mother', 'Lois'), ('Lois', 'father', 'Roy')]}]