[John] took his brother [Douglas] to get lunch at a local diner. [George] decided to give his son [John], for his birthday, the latest version of Apple watch.
('Douglas', 'George')
[John] took his brother [Douglas] to get lunch at a local diner. [George] decided to give his son [John], for his birthday, the latest version of Apple watch.
[{('Douglas', 'father', 'George'): [('Douglas', 'brother', 'John'), ('John', 'father', 'George')]}]
['brother', 'father']