[Andrea] was on the phone with her brother [Douglas] earlier. [Douglas] had his grandfather [Clarence] over for Lunch.
('Andrea', 'Clarence')
[Andrea] was on the phone with her brother [Douglas] earlier. [Douglas] had his grandfather [Clarence] over for Lunch.
[{('Andrea', 'grandfather', 'Clarence'): [('Andrea', 'brother', 'Douglas'), ('Douglas', 'grandfather', 'Clarence')]}]
['brother', 'grandfather']