[Scott] brought his grandson, [Joseph], out to lunch. [Joseph]'s mother [Helen] made a cake for his birthday and her other son [Richard] ate a piece of it.
('Scott', 'Richard')
[Scott] brought his grandson, [Joseph], out to lunch. [Joseph]'s mother [Helen] made a cake for his birthday and her other son [Richard] ate a piece of it.
[{('Scott', 'grandson', 'Richard'): [('Scott', 'grandson', 'Joseph'), ('Joseph', 'brother', 'Richard')]}, {('Joseph', 'brother', 'Richard'): [('Joseph', 'mother', 'Helen'), ('Helen', 'son', 'Richard')]}]