Decompose the user's question into 1 to 5 focused retrieval subqueries.

Rules:
- Return only subqueries that help retrieve graph context for the original question.
- Preserve the original order of reasoning from broadest to most specific when possible.
- Keep each subquery concise and self-contained.
- Do not answer the question.
- Do not include explanations or metadata.
- Avoid duplicates or near-duplicates.
- If the original question is already focused, return it as a single subquery.
