The common, layered Semantic Web technology stack

Here is a visualization of the common, layered Semantic Web technology stack. This graphic is a modified version of the Semantic Web technology stack visualization created by Benjamin Nowack. This figure is freely usable and sharable under the Creative Common Attribution 3.0 Unported license.
Here are some references to get into some parts of the different layers:

• The Web Platform: URI (Uniform Resource Identifier)/ IRI (Internationalized Resource Identifier), HTTP (HyperText Transfer Protocol) and HTML (HyperText Markup Language) that build together the basis for the hypertext Web; Linked Data
• Syntax: N3 (Notation 3)/ Turtle (Terse RDF Triple Language), RDFa, XML (Extensible Markup Language) and JSON (JavaScript Object Notation)
• Knowledge Representation Structure (a simple knowledge representation language): RDF (Resource Description Framework) Model
• Semantics (advanced knowledge representation languages): RDFS (RDF Schema), OWL (Web Ontology Language)
• Rules: RIF (Rule Interchange Format)
• Query: SPARQL
• Security: WebID, CORS (Cross-Origin Resource Sharing)
• Proof: Named Graphs, Provenance XG
• Trust: WebID, Provenance XG, CORS (Cross-Origin Resource Sharing)
• Applications: Social Web, LOD (Linked Open Data) Cloud