Why did this intitle: search match?

Fetches the raw CirrusSearch response (cirrusDumpResult) and reconstructs, per result, which title or redirect supplied each search term.

Live mode queries en.wikipedia.org via api.php…&cirrusDumpResult=1&origin=*. Use a query with two or more intitle: terms.
Offline / paste a raw JSON dump
Tip: opening this file via file:// may block the live fetch and the bundled-sample fetch; in that case paste the JSON here (e.g. the contents of dual-intitle-response.json).