[Dennis]'s sister [Jennifer] asked him for some help planting her garden. [Dennis]'s grandfather, [Clarence], was part of a famous band.
('Jennifer', 'Clarence')
[Dennis]'s sister [Jennifer] asked him for some help planting her garden. [Dennis]'s grandfather, [Clarence], was part of a famous band.
[{('Jennifer', 'grandfather', 'Clarence'): [('Jennifer', 'brother', 'Dennis'), ('Dennis', 'grandfather', 'Clarence')]}]
['brother', 'grandfather']