[Timmy] likes to visit his grandmother [Mary]'s house on Sundays. [Mary] could n't wait to pick up her husband [Roy] at the airport.
('Roy', 'Timmy')
[Mary] could n't wait to pick up her husband [Roy] at the airport. [Timmy] likes to visit his grandmother [Mary]'s house on Sundays.
[{('Roy', 'grandson', 'Timmy'): [('Roy', 'wife', 'Mary'), ('Mary', 'grandson', 'Timmy')]}]