After Operation August Storm, the Soviet-Mongolian Cavalry-Mechanized Group entered Chifeng.

Entity and relation annotations:
id: 0
type: entity
value: text: Operation August Storm
labels: <Event>
id: 1
type: entity
value: text: the Soviet-Mongolian Cavalry-Mechanized Group
labels: <Organization>
id: 2
type: entity
value: text: Chifeng
labels: <Location>