Big Basin and Little Basin are two well-known sinkholes in western Clark County.

Entity and relation annotations:
id: 0
type: entity
value: text: Big Basin
labels: <Location>
id: 1
type: entity
value: text: Little Basin
labels: <Location>
id: 2
type: entity
value: text: Clark County
labels: <Location>
id: 3
type: entity
value: text: western Clark County
labels: <Location>
type: relation
to_id: 2
labels: Location:located_in:Location
from_id: 0
type: relation
to_id: 2
labels: Location:located_in:Location
from_id: 1
type: relation
to_id: 2
labels: Location:located_in:Location
from_id: 3