  w:Berlin s:Population Berlin:Statement1 .
  Berlin:Statement1 rdf:type o:Statement .

  Note that we introduced two new properties, s:Population (s: like statement) and v:Population 
  (v: like value) instead of the original p:Population property (mind the namespaces). The original 
  property, in the p: namespace, is a datatype property that connects items directly with an integer 
  value (i.e. the domain is item). The s: property, on the other hand, is an object property connecting 
  the item with the statement about it." [1]

  [1] https://meta.wikimedia.org/wiki/Wikidata/Development/RDF#Statements_with_qualifiers

The problem is this: "s:Population" is not published that I can find.  So is the question will "s:Population" be mapped to some schema.org/Population rdf:Property definition, if there were such a thing defined at schema.org? But looking at schema.org, "population" is usually defined as a p:Population kind-of-thing, not an s:Population kind-of-thing.  In wikidata, p:Population is an rdf:Datatype, s:Population an rdf:Property. Schema.org's population is a datatype, not a class in an ontology, so they're not fitting together.

But as I've said, it's a problem that s:Population is not defined. Is "s:Population" not closer to a collection, a bag, that has restricted content that is, a "bag of statements" (see quotation above), than it is to a functional definition of "Population" as something more like a "group of living individuals", "alive" as per some specified context? Where does THIS concept of "population" fit with <rdf:Property rdf:about=wikidata/s:Population/> ?

Hard to avoid that s:Population basically is just short-hand for "Population Statements". Using shorthand certainly has precedence, being that q:Qualifier is short-hand for a category, an owl:Class, and thus "q:Draft" is (very acceptable) short-hand for "Draft Things"... So we need a crisp definition of s:Population please!

Thanks - john