Denny said:
But if you find a simpler, and more RDFish way to express the (below) statement, please feel free to enlighten me. I would be indeed very interested.
"The population density of France, as of an 2012 estimate, is 116 per square kilometer, according to the "Bilan demographique 2010"."
A wiki namespace-based approach is:
 
France has_subobject France#Density:2012_pop_estimate_Bilan_2010
France#Density:2012_pop_estimate_Bilan_2010 ^source "Bilan ...2010"
France#Density:2012_pop_estimate_Bilan_2010 ^npkm2 116
France#Density:2012_pop_estimate_Bilan_2010 Type Estimated
France#Density:2012_pop_estimate_Bilan_2010 ^date 2012
 
Key:
France#Density:2012_pop_estimate_Bilan_2010 is a named subobject
This subobject is so named to prevent subobject name collisions
Subobject names follow pagename naming conventions
has_subobject is a reserved property name
Density is an instance in a Type (or, Noun) namespace
All properties prefixed by ^ are text properties
^source and ^date are Dublin Core properties (both text properties)
Type is a Dublin Core property (an object property)
Estimated is an adjective treated as a subclass of owl:Class
Estimated is an abbreviation of "Estimated Things"
^npkm2 is an SI unit (amount per sq km)