The Seafair Triathlon is held on the shores of Lake Washington from Seward Park.

Entity and relation annotations:
id: 0
type: entity
value: text: The Seafair Triathlon
labels: <Event>
id: 1
type: entity
value: text: Lake Washington
labels: <Location>
id: 2
type: entity
value: text: Seward Park
labels: <Location>
type: relation
to_id: 2
labels: Location:located_in:Location
from_id: 1
type: relation
to_id: 1
labels: Event:Occurs_at:Location
from_id: 0