query: SELECT (count(?prot) as ?count)
  WHERE
  {
      ?drug wdt:P31/wdt:P279* wd:Q11173 .
      ?prot wdt:P129 ?drug .
      ?prot wdt:P352|wdt:P351 ?id
  	SERVICE wikibase:label { bd:serviceParam wikibase:language "en" }
  }