[Rosemary] took her sister, [Glenna], out to dinner for her birthday. [Glenna]'s grandfather, [Adam] is taking her to the museum, and invited her sister [Mary] to come.
[Glenna]'s grandfather, [Adam] is taking her to the museum, and invited her sister [Mary] to come.
[{('Adam', 'granddaughter', 'Mary'): [('Adam', 'granddaughter', 'Glenna'), ('Glenna', 'sister', 'Mary')]}]