Adding reified relations in SemApps

In order to capture skills in a richer way, we needed to be able to run what is called in semantic web reified relations (or ternary relations).

This is the possibility to bring additional information on top of a "simple" relationship.

For example, let's start with a relation like "Bob knows Alice"

Subject	Predicate	Object
Bob	foaf:knows	Alice

If we want to qualify the relationship between these two people more precisely, we call this a reification (and there are several ways to do this).

This is for example what we did ( see Schema > Architecture ) to manage the roles between a person and an organization.