The homeport of "Harpers Ferry" is at San Diego County, California.

Entity and relation annotations:
id: 0
type: entity
value: text: San Diego County
labels: <Location>
id: 1
type: entity
value: text: California
labels: <Location>
id: 2
type: entity
value: text: "Harpers Ferry"
labels: <Location>
type: relation
to_id: 0
labels: Location:located_in:Location
from_id: 2
type: relation
to_id: 1
labels: Location:located_in:Location
from_id: 0