Response date
A query made today does not make every returned detail current. Read event or update dates separately from the search time. If no date is given, recency is not established.
Original source
Where an accessible source is listed, inspect the relevant material and context. A short extract may omit qualifications or later changes. The mere presence of a link does not prove accuracy.
Unknown provenance
Mark information without a clear source as unverified. Do not assume the service uses only public data without evidence. A feature description does not explain where a particular record came from.