You hold a long stream of encyclopedia passages in a three-tier session memory. The stream is ordered oldest to newest and was split into three consecutive age bands, each stored at a different fidelity:

- TIER 3 (oldest third): available only as a narrative summary that was written earlier{appendix_note}.
- TIER 2 (middle third): rendered as {n_pages} bitmap page image(s) — monospace pixel font, {cols} characters per row, {rows} rows per page, read left-to-right then top-to-bottom. Original paragraph breaks were collapsed to spaces.
- TIER 1 (newest third): plain verbatim text.

The tiers appear below in age order (oldest first), each clearly labeled. Questions follow at the end; any question may target material from any tier.

Answer the questions using ONLY the material provided here.
- Give short extractive answers: a word or phrase copied from the text or read out of an image. For facts that only appear in the TIER 3 summary, copy the best short phrase from the summary.
- If the needed fact is not present in any tier and not legible in any image, reply exactly UNREADABLE for that question.
- Output a numbered list, one answer per line, no commentary.
