query-ece6a1dc45766068373153c521909a05

PREFIX schema: <http://schema.org/>
SELECT ?first_letter  (COUNT(?first_letter) as ?count) (?count/?total*100 AS ?pct)
WHERE
{

{ 
  SELECT (COUNT(?article) AS ?total)
  WHERE
  {
    ?article schema:isPartOf <https://is.wikipedia.org/>.
  }
}  ?article schema:name ?title.
  ?article schema:isPartOf <https://is.wikipedia.org/>.
  BIND (SUBSTR(?title, 1, 1) AS ?first_letter)
}
GROUP BY ?first_letter ?total

graph TD classDef projected fill:lightgreen; classDef literal fill:orange; classDef iri fill:yellow; v1("?article") v5("?count"):::projected v4("?first_letter"):::projected v6("?pct") v3("?title") v2("?total"):::projected c2([https://is.wikipedia.org/]):::iri v1 --"schema:isPartOf"--> c2 bind1[/"count(?article)"/] v1 --o bind1 bind1 --as--o v2 v1 --"schema:name"--> v3 v1 --"schema:isPartOf"--> c2 bind2[/"substring(?title,'1^^xsd:integer','1^^xsd:integer')"/] v3 --o bind2 bind2 --as--o v4 bind4[/"count(?first_letter)"/] v4 --o bind4 bind4 --as--o v5 bind5[/"?count / ?total * '100^^xsd:integer'"/] v5 --o bind5 v2 --o bind5 bind5 --as--o v6