OCRA: Annotations allow complex semantic nets to be modeled

human(

name : string,

...,

competences : {competence} / strength

)

competence(name : string, ...)

ann() // the top class of all annotations

strength : ann(value : string) // e.g. "good", "medium", "bad"

human

name competences

strength

name

competence

name

John

English

French

Mary

bad

good

medium

classes

objects