[James] invited his grandmother, [Ashley], and his brother, [Travis], to a live concert at the fairgrounds.
('Travis', 'Ashley')
[James] invited his grandmother, [Ashley], and his brother, [Travis], to a live concert at the fairgrounds.
[{('Travis', 'grandmother', 'Ashley'): [('Travis', 'brother', 'James'), ('James', 'grandmother', 'Ashley')]}]
['brother', 'grandmother']