At the Battle of Spotsylvania the regiment's colonel was killed and Otis assumed command.

Entity and relation annotations:
id: 0
type: entity
value: text: the Battle of Spotsylvania
labels: <Event>
id: 1
type: entity
value: text: Otis
labels: <Person>
type: relation
to_id: 0
labels: Person:participates_in:Event
from_id: 1