[Arthur] and his brother [Guy] do n't get along very well, so [Arthur], who is [Roy]'s grandson, spends most of his time with [Roy] instead.
('Roy', 'Guy')
[Arthur] and his brother [Guy] do n't get along very well, so [Arthur], who is [Roy]'s grandson, spends most of his time with [Roy] instead.
[{('Roy', 'grandson', 'Guy'): [('Roy', 'grandson', 'Arthur'), ('Arthur', 'brother', 'Guy')]}]