Dolgov died while carrying out a high-altitude parachute jump from a Volga balloon gondola.

Entity and relation annotations:
id: 0
type: entity
value: text: Dolgov
labels: <Person>
id: 1
type: entity
value: text: Volga balloon gondola
labels: <Production>
type: relation
to_id: 1
labels: Person:owns/uses:Production
from_id: 0