query: SELECT (COUNT(?lexeme) as ?senses) (COUNT(?item) as ?items) (?items/?senses as ?percent) WHERE {
    ?lexeme a ontolex:LexicalEntry;
         wikibase:lemma ?lemma;
         dct:language wd:Q36846;
         wikibase:lexicalCategory wd:Q1084;
         ontolex:sense ?sense.
    ?sense skos:definition ?gloss.
    OPTIONAL { ?sense wdt:P5137 ?item. }
    filter(lang(?gloss) = 'en')
    SERVICE wikibase:label { bd:serviceParam wikibase:language "[AUTO_LANGUAGE],en". }
  }