SPARQL endpoint: https://ep.pubannotation.org/PubAnnotation/query
The project is not yet RDFized.
It is now a beta feature, which is still under development. Please understand that sometimes this feature may work unstably. Your comments or reports on bugs will be highly appreciated.
Failed to open TCP connection to ep.pubannotation.org:443 (No route to host - connect(2) for "ep.pubannotation.org" port 443)