https://github.com/mcollina/levelgraph
I would like to publish similar interactive walk through for LevelGraph ASAP: http://nodeschool.io/#levelmeup and we could use it during hands on workshop!
Currently it supports RDF through two extensions LevelGraph-N3 and LevelGraph-JSON-LD. We also plan work on LevelGraph-SPARQL
Speakers: elf Pavlik