Update README.adoc

README.adoc

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 ==== Quick Thoughts
 
 Challenge: Express the link:https://docs.evolveum.com/midpoint/midprivacy/phases/01-data-provenance-prototype/axiom/[Axiom Design Draft] using schema.org vocabularies and JSON.
 
 . schema.org provides the ability to declare namespaces.
+[info]
+====
+link:https://github.com/schemaorg/schemaorg[Schema.org] uses Web standards such as JSON-LD, Microdata and RDFa to allow for independent extension (for example, see GS1's vocabulary)
+====
 . See if the rest of the Axiom specification can be expressed in simple JSON
 
 .