[Scott]'s grandson, [Billy], was born yesterday. [Billy] asked his father, [Matthew], to help him with his math homework. [Matthew] could n't, because he was lousy at math himself. [Matthew] decided to take his son, [Andy], on a ski vacation.
('Scott', 'Andy')
[Scott]'s grandson, [Billy], was born yesterday. [Billy] asked his father, [Matthew], to help him with his math homework. [Matthew] could n't, because he was lousy at math himself. [Matthew] decided to take his son, [Andy], on a ski vacation.
[{('Scott', 'grandson', 'Andy'): [('Scott', 'grandson', 'Billy'), ('Billy', 'brother', 'Andy')]}, {('Billy', 'brother', 'Andy'): [('Billy', 'father', 'Matthew'), ('Matthew', 'son', 'Andy')]}]