Darbepoetin is marketed by Amgen under the trade name Aranesp.

Entity and relation annotations:
id: 0
type: entity
value: text: Darbepoetin
labels: <Production>
id: 1
type: entity
value: text: Amgen
labels: <Organization>
id: 2
type: entity
value: text: Aranesp
labels: <Production>
type: relation
to_id: 0
labels: Organization:develops/produces/sells:Production
from_id: 1
type: relation
to_id: 2
labels: Organization:develops/produces/sells:Production
from_id: 1