Bookmark

initially used by https://github.com/mark-book/markbook and now its used by https://github.com/pondersource/solidBookmarker

To create a new bookmark at /bookmarks/index.ttl, add the following triples into it:

</bookmarks/index.ttl#this> a          http://www.w3.org/2002/01/bookmark#Bookmark .
</bookmarks/index.ttl#this> http://purl.org/dc/terms/title   "google" .
</bookmarks/index.ttl#this> http://www.w3.org/2002/01/bookmark#recalls   "https://www.google.com" .