Assertion: search engine | /r/CapableOf | consider factor
Facets:
value: for their rankings
type: PURPOSE
Source sentences:
text: Off-page factors (such as PageRank and hyperlink analysis) were considered as well as on-page factors (such as keyword frequency, meta tags, headings, links and site structure) to enable Google to avoid the kind of manipulation seen in search engines that only considered on-page factors for their rankings.