Read this and answer the question. If the question is unanswerable, say "unanswerable".

Robots.txt is used as part of the Robots Exclusion Standard, a voluntary protocol the Internet Archive respects that disallows bots from indexing certain pages delineated by its creator as off-limits. As a result, the Internet Archive has rendered unavailable a number of web sites that now are inaccessible through the Wayback Machine. Currently, the Internet Archive applies robots.txt rules retroactively; if a site blocks the Internet Archive, such as Healthcare Advocates, any previously archived pages from the domain are rendered unavailable as well. In cases of blocked sites, only the robots.txt file is archived.

What file is utilized to exercise the rights promoted by the Internet Archive?
unanswerable
Läs detta och besvara frågan. Om frågan är obesvarad, säg "osvarbar". Robots.txt används som en del av Robots Exclusion Standard, ett frivilligt protokoll som Internet Archive respekterar som förbjuder bots från indexering av vissa sidor som avgränsas av dess skapare som off-limits. Detta har lett till att Internet Archive har gjort ett antal webbplatser otillgängliga som nu är otillgängliga via the Wayback Machine. För närvarande tillämpar Internet Archive robots.txt regler retroaktivt; om en webbplats blockerar Internet Archive, såsom Healthcare Advocates, görs alla tidigare arkiverade sidor från domänen otillgängliga också. Vid blockerade platser arkiveras endast robots.txt-filen. Vilken fil används för att utöva de rättigheter som främjas av Internet Archive?
Read this and answer the question. If the question is unanswered, say "unanswerable." Robots.txt is used as part of Robots Exclusion Standard, a voluntary protocol that the Internet Archive respects that prohibits bots from indexing certain pages bounded by its creators as off-limits. As a result, the Internet Archive has made a number of websites unavailable which are now unavailable via the Wayback Machine. Currently, Internet Archive applies robots.txt rules retroactively; if a website blocks the Internet Archive, such as Healthcare Advocates, all previously archived pages from the domain are made unavailable as well. At blocked locations, only the robots.txt file is archived. Which file is used to exercise the rights promoted by the Internet Archive?
Osvarsbart
Unanswerable