func TypeURIs(labels []string) []string {
	var results []string
	sorted, err := SortTypes(labels)
	if err != nil {
		log.Printf("ERROR - %v", err)
		return []string{}
	}
	for _, label := range sorted {
		uri := typeURIs[label]
		if uri != "" {
			results = append(results, uri)
		}
	}
	return results
}
func TypeURIs(labels []string) []string {
	var results []string
	sorted, err := SortTypes(labels)
	if err != nil {
		log.Printf("ERROR - %v", err)
		return []string{}
	}
	for _, label := range sorted {
		uri := typeURIs[label]
		if uri != "" {
			results = append(results, uri)
		}
	}
	return results
}
// TypeURIs - Builds up the type URI based on type e.g http://www.ft.com/ontology/Person