querying underlying ontologies structure in LOD

hello friends


is there a way in LOD data to query for underlying ontology structure ?


eg. say i want to find some information about "population of australia" from
LOD data. i can figure out that australia is a country by many different
means but before resolving this query i would like to know from LOD if a
country does have population property/predicate or not. this is to filter
out queries like "pupulation of chairs". is there a way in LOD to query if
the countries ( or its class type) has population attribute before moving
ahead to find the answer to query ?



thanks
ravinder