Function explain_query 

pub fn explain_query(
    content: &ResolvedContent,
    query: &ExplanationQuery,
) -> Result<QueryExplanation, ExplanationError>

Collect independent semantic and literal evidence without unique selection.

Matching names/forms and owner coordinates, direct ordinary content, and validated explicit relations are kept distinct. This never executes code, performs I/O, resolves remote value domains or modifies the input tree.

Errors

Returns invalid request bounds or absence of readable source. Multiple and zero matching owners are normal results, not navigation errors.