The Boulder Creek mine site is located on part of the Tubutulik River.

Entity and relation annotations:
id: 0
type: entity
value: text: the Tubutulik River
labels: <Location>
id: 1
type: entity
value: text: The Boulder Creek mine site
labels: <Location>
type: relation
to_id: 0
labels: Location:located_in:Location
from_id: 1