Lightweight RDFS Ontologies

This is another quick tutorial for those wanting to serialize data to RDF. Languages like OWL provide heavyweight description logic modeling capabilities for RDF, but most people find that lightweight RDFs modeling is the most appropriate.
I’ll cover three things in this posts: labels, classes, properties. This post assumes the following three namespaces:
@prefix rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#>
@prefix rdfs: [...]