Q:

Finding label of a property

I am trying to find label of a property on dbpedia with this query
PREFIX geo: <http://www.w3.org/2003/01/geo/wgs84_pos#>
SELECT
    ?label
WHERE {
    geo:lat rdfs:label ?label.
} LIMIT 20

But it does not return anything. I've checked wgs84 ontology, and lat has the label latitutde. Why doesn't it work, and how would I go about finding properties labels in general?

A:

I've checked wgs84 ontology, and lat has the label latitutde [sic]. 

That doesn't mean that DBpedia includes all the triples that that ontology specifies.  If DBpedia doesn't include that data, then you'd need to look for it in places where it is available.  DBpedia doesn't include any triples with geo:lat as subject or object, as shown by the zero results to this query:
select * where {
  { geo:lat ?p ?o }
  union 
  { ?s ?p geo:lat }
}

DBpedia just happens to include triples where geo:lat is used as a predicate.  For more information about the predicate, you'll have to look to where it's defined.

