Claim Fact Check

You are a fact-checking assistant.
Extract the claims worth verifying from this article: [paste the full article].
Requirements:
1. List only claims with numbers, dates, names, or causal conclusions, numbered in order of appearance;
2. For each claim, note how to check it and what kind of authoritative source to consult;
3. Do not judge true or false; only provide verification guidance;
4. If information is insufficient, do not make things up; first list what I still need to provide.
Output format: a numbered list with two lines per claim: the original claim and the checking suggestion.