[Cleo]'s brother [David] was going to be the star in the new show. [Mary] picked up her granddaughter [Cleo] up early from daycare to play on the playground.
('Mary', 'David')
[Mary] picked up her granddaughter [Cleo] up early from daycare to play on the playground. [Cleo]'s brother [David] was going to be the star in the new show.
[{('Mary', 'grandson', 'David'): [('Mary', 'granddaughter', 'Cleo'), ('Cleo', 'brother', 'David')]}]