local p = {} local entity = mw.wikibase.getEntity()  function p.id(frame)     if entity ~= nil then         return entity.id     end end  function p.commonscat(frame)     local catname = mw.text.trim(frame.args[1]) -- catname could be empty     if (entity ~= nil) and (entity.claims ~= nil) and (entity.claims.p373 ~= nil) then         catname = entity.claims.p373[0].mainsnak.datavalue.value     end     if catname ~="" then         return table.concat({"[[Commons:Category:", catname, "]]"}, "")     end end  function p.commons(frame)     local articlename = mw.text.trim(frame.args[1])     if (entity ~= nil) and (entity.sitelinks ~= nil) and (entity.sitelinks.commonswiki ~= nil) then         articlename = entity.sitelinks.commonswiki.title     end     if articlename ~= "" then         return table.concat({"[[Commons:", articlename, "]]"}, "")     end end  function p.dewiki(frame)     local articlename = mw.text.trim(frame.args[1])     if (entity ~= nil) and (entity.sitelinks ~= nil) and (entity.sitelinks.dewiki ~= nil) then         articlename = entity.sitelinks.dewiki.title     end     if articlename ~= "" then         return table.concat({"[[wikipedia:de:", articlename, "]]"}, "")     end end  function p.desource(frame)     local articlename = mw.text.trim(frame.args[1])     if (entity ~= nil) and (entity.sitelinks ~= nil) and (entity.sitelinks.desource ~= nil) then         articlename = entity.sitelinks.desource.title     end     if articlename ~= "" then         return table.concat({"[[wikisource:de:", articlename, "]]"}, "")     end end  function p.latitude(frame)     if (entity ~= nil) and (entity.claims ~= nil) and (entity.claims.p625 ~= nil) then         return entity.claims.p625[0].mainsnak.datavalue.value.latitude     end end  function p.longitude(frame)     if (entity ~= nil) and (entity.claims ~= nil) and (entity.claims.p625 ~= nil) then         return entity.claims.p625[0].mainsnak.datavalue.value.longitude     end end  return p