Search engines have been exploring concepts of relevance. Google recently received a patent that redefines the way someone might perform searches to help find relevant pages, Bill Slawski tells us. The patent describes a process that includes using a query term in a search, as well as a label that might match annotations made on pages returned in search results. Slawski provides examples and screen shots to explain how annotation labels might work. Google does provides a way to include labels in Google Custom Search, he writes.