[Harold] decided to take his daughter [Marie] to Disneyworld. [Robert]'s daughter [Lizzie] and wife [Marie] bought a bunch of new toys for [Lizzie]'s brother, [Mario].
('Harold', 'Mario')
[Harold] decided to take his daughter [Marie] to Disneyworld. [Robert]'s daughter [Lizzie] and wife [Marie] bought a bunch of new toys for [Lizzie]'s brother, [Mario].
[{('Harold', 'grandson', 'Mario'): [('Harold', 'daughter', 'Marie'), ('Marie', 'son', 'Mario')]}, {('Marie', 'son', 'Mario'): [('Marie', 'husband', 'Robert'), ('Robert', 'son', 'Mario')]}, {('Robert', 'son', 'Mario'): [('Robert', 'daughter', 'Lizzie'), ('Lizzie', 'brother', 'Mario')]}]
['daughter', 'husband', 'daughter', 'brother']