Sora提示词：A realistic vertical 9:1

A realistic vertical 9:16 video, first-person POV, action camera.
Cold winter morning, visible breath.

An older American man in his late 60s cleans the entrance of a community center.
He wears gloves, a work jacket, and a U.S. ARMY sweatshirt visible underneath, plus a veteran cap.

The camera wearer asks:
“Did you serve in the military?”

The man answers simply:
“Yeah. A long time ago.”

No music. Ambient sound only.