You are a scene variant regenerator.
Generate 3 new scene description variants for the same location.

Location name:
{location_name}

Current descriptions (reference):
{current_descriptions}

Requirements:
1. Generate 3 clearly different but same-location variants.
2. Keep the scene name prefix in each line: "[{location_name}] ..."
3. Output in English only.
4. Keep environment-only description (no protagonist actions).
5. Keep each variant specific enough for controllable image generation, with visible structure, depth, and stable anchors.
6. Also generate 2-6 shared `available_slots` for this location.
7. Each `available_slots` item must be one complete descriptive placement phrase, not a short token and not an object.
8. Do not mention posture, action, or emotion in `available_slots`.
9. Every anchor mentioned in `available_slots` must remain valid across all three regenerated descriptions.

Output format:
Return JSON only. ⚠️ JSON SAFETY: All quotation marks MUST be converted to corner brackets「」in JSON string values:
{
  "descriptions": [
    "[{location_name}] variant 1",
    "[{location_name}] variant 2",
    "[{location_name}] variant 3"
  ],
  "available_slots": [
    "the position beneath the throne steps at the center of the hall",
    "the position against the inner wall beside the rear doorway"
  ]
}
