[Roy] bought his granddaughter [Marjorie] a new car. [Marjorie]'s sister [Alberta] was so jealous.
('Roy', 'Alberta')
[Roy] bought his granddaughter [Marjorie] a new car. [Marjorie]'s sister [Alberta] was so jealous.
[{('Roy', 'granddaughter', 'Alberta'): [('Roy', 'granddaughter', 'Marjorie'), ('Marjorie', 'sister', 'Alberta')]}]