Question: qutebrowser is a web browser for Linux, Windows, and macOS operating systems whose default search engine emphasizes protecting searchers' what?
Sentence (from "Cliqz"): It is a fork of the Firefox web browser with privacy-oriented changes, among which are a crowdsourced anti-tracking mechanism, and an in-house search engine embedded within the browser, utilizing its own index of web pages to produce suggestions within the address bar dropdown menu rather than on separate pages.
Relevant evidence: No