A property path expression (or just 'path') is similar to a string regular expression but over properties, not characters. ARQ determines all matches of a path expression and binds subject or object as appropriate. Only one match is recorded - no duplicates for any given path expression, although is the path is used in a situation where it's initial points is already repeated in a pattern, then this duplication is preserved.
RegExp ou XPath appliqué à un graphe? Intéressant, mais peut-être abscons.
Freebase.com is powered by a tuple store called graphd. Graphd is a C/Unix server which processes commands in a simple template-based query language.
linked articles are also interesting
ResumeRDF is an ontology developed to express information contained in a personal Resume or Curriculum Vitae (CV) on the Semantic Web. This includes information about work and academic experience, skills, etc.
time for me to try xhtml/html5+rdfa
the core terms of FOAF in a diagram
the big picture.
Another SemWeb post I meant to link to a while back - Keith Alexander has tips on creating RDF vocabularies or ontologies.
nice starting point