Annotation Whitespace

Problem: An annotation has leading or trailing whitespace, usually a single space.

Solution: Re-format the annotation to remove additional whitespace.

PREFIX owl: <http://www.w3.org/2002/07/owl#>
PREFIX rdfs: <http://www.w3.org/2000/01/rdf-schema#>

SELECT DISTINCT ?entity ?property ?value WHERE {
  {?property a owl:AnnotationProperty .
   ?entity ?property ?value .
   FILTER REGEX(str(?value), "[\\s\r\n]+$")
   FILTER (!isBlank(?entity))}
  UNION
  {?property a owl:AnnotationProperty .
   ?entity ?property ?value .
   FILTER REGEX(str(?value), "^[\\s\r\n]+")
   FILTER (!isBlank(?entity))}
}
ORDER BY ?entity