[Arthur] asked his mother [Lois] to read to him. [Lois] was too busy. [Mary] took her daughter [Lois] to the store to find her some new boots for the cold winter weather.
('Arthur', 'Mary')
[Arthur] asked his mother [Lois] to read to him. [Lois] was too busy. [Mary] took her daughter [Lois] to the store to find her some new boots for the cold winter weather.
[{('Arthur', 'grandmother', 'Mary'): [('Arthur', 'mother', 'Lois'), ('Lois', 'mother', 'Mary')]}]