One known as the Spicer Massacre in Greene County, Pennsylvania.

Entity and relation annotations:
id: 0
type: entity
value: text: the Spicer Massacre
labels: <Event>
id: 1
type: entity
value: text: Greene County
labels: <Location>
id: 2
type: entity
value: text: Pennsylvania
labels: <Location>
type: relation
to_id: 1
labels: Event:Occurs_at:Location
from_id: 0
type: relation
to_id: 2
labels: Location:located_in:Location
from_id: 1