[George] was talking to his brother [Nicholas], when suddenly [Nicholas] got a call from his son [Glen].
('Glen', 'George')
[George] was talking to his brother [Nicholas], when suddenly [Nicholas] got a call from his son [Glen].
[{('Glen', 'uncle', 'George'): [('Glen', 'father', 'Nicholas'), ('Nicholas', 'brother', 'George')]}]
['father', 'brother']