Added a query to list authors

Author: egonw

A. Metadata/authors.rq

@@ -0,0 +1,11 @@
+PREFIX dc:    <http://purl.org/dc/elements/1.1/>
+PREFIX foaf:  <http://xmlns.com/foaf/0.1/>
+
+SELECT (COUNT(DISTINCT ?pathway) AS ?count) ?page ?name ?orcid WHERE {
+  ?author_ ^dc:creator ?pathway ;
+    a foaf:Person .
+  OPTIONAL { ?author_ foaf:homepage ?page }
+  OPTIONAL { ?author_ foaf:name ?name }
+  OPTIONAL { ?author_ dc:identifier ?orcid }
+} GROUP BY ?page ?name ?orcid
+  ORDER BY DESC(?count)