Block • URIs for unambiguous names for resources, • RDF for common data model for expressing metadata, • Ontology(RDFS, OWL) for common vocabularies. Linked Data becomes: Web of data/things/concepts • What is a Thing/Concept? - It can be anything in the world - a movie, a person, a disease, a location… • This page is talking about ‘Barack Obama’, He is a ‘Person’ and he is the ‘President of USA’ ?