[Marjorie] was sewing a sweater for her sister [Alberta]. [Bridget] called [Marjorie], her sister, to see if she wanted to go out to eat.
('Alberta', 'Bridget')
[Marjorie] was sewing a sweater for her sister [Alberta]. [Bridget] called [Marjorie], her sister, to see if she wanted to go out to eat.
[{('Alberta', 'sister', 'Bridget'): [('Alberta', 'sister', 'Marjorie'), ('Marjorie', 'sister', 'Bridget')]}]