Turn several sources into a research brief

Build a research brief from these sources.

Produce:
1. Answer to my question in three sentences, with source labels attached.
2. Agreed — claims that more than one source supports. Note how many.
3. Conflicting — where sources disagree. State each position with its source. *Do not resolve the conflict or average the positions.*
4. Single-source — claims only one source makes. These are the ones to verify before relying on them.
5. Not addressed — what my question needs that none of the sources cover.

Rules:
- Label every claim with its source. A brief without attribution cannot be checked.
- *Do not add knowledge from outside the sources I gave you*, even if you are confident it is correct. If something important is missing, list it under "not addressed".
- Where a source hedges, carry the hedge through. Do not firm up a tentative finding.