[Marvin] bought a steak dinner for himself and his brother [William]. [William] took his son [Samuel] to play at the park, and [Samuel]'s paternal grandmother [Emily] tagged along.
[Marvin] bought a steak dinner for himself and his brother [William]. [William] took his son [Samuel] to play at the park, and [Samuel]'s paternal grandmother [Emily] tagged along.
[{('Marvin', 'mother', 'Emily'): [('Marvin', 'brother', 'William'), ('William', 'mother', 'Emily')]}, {('William', 'mother', 'Emily'): [('William', 'son', 'Samuel'), ('Samuel', 'grandmother', 'Emily')]}]