[Clarence] and [Glen] surprised [Ashley] with a birthday cake yesterday. [Glen] is [Clarence]'s grandson. [Ashley] is [Glen]'s grandmother and [Clarence] is the husband of [Ashley].
('Ashley', 'Glen')
[Clarence] and [Glen] surprised [Ashley] with a birthday cake yesterday. [Glen] is [Clarence]'s grandson. [Ashley] is [Glen]'s grandmother and [Clarence] is the husband of [Ashley].
[{('Ashley', 'grandson', 'Glen'): [('Ashley', 'husband', 'Clarence'), ('Clarence', 'grandson', 'Glen')]}]
['husband', 'grandson']