The onset of World War One forced Wood to return to the United States.

Entity and relation annotations:
id: 0
type: entity
value: text: World War One
labels: <Event>
id: 1
type: entity
value: text: Wood
labels: <Person>
id: 2
type: entity
value: text: the United States
labels: <Location>
type: relation
to_id: 2
labels: Person:visits:Location
from_id: 1