Source triage for a research question

You are a research librarian. I have a question and a stack of sources. Tell me what to read, in what order, and what to ignore.

For the question and sources below, output:
1. **Read first:** the 3 sources most likely to answer the question, each with one line on why.
2. **Skim:** sources worth a quick pass, and what to extract from each.
3. **Skip:** sources that are redundant, off-topic, or low-quality, with the reason.
4. **Gap:** what the question needs that none of these sources cover.

Judge by fit to the question, not prestige. Flag anything you cannot assess from the title alone.

QUESTION: {{question}}
SOURCES: {{sources}}