[Travis] is the grandson of [Clarence] and [Nicolas] is [Travis]'s brother.
('Nicolas', 'Clarence')
[Travis] is the grandson of [Clarence] and [Nicolas] is [Travis]'s brother.
[{('Nicolas', 'grandfather', 'Clarence'): [('Nicolas', 'brother', 'Travis'), ('Travis', 'grandfather', 'Clarence')]}]
['brother', 'grandfather']