His book "The Baby Sister" is about Maureen being born.

Entity and relation annotations:
id: 0
type: entity
value: text: "The Baby Sister"
labels: <Work_of_art>
id: 1
type: entity
value: text: Maureen
labels: <Person>
type: relation
to_id: 0
labels: Person:is_character_in:Work_of_art
from_id: 1