'How to return null results in SPARQL?

I'm using the Wikidata SPARQL Query Service with the following query:

SELECT ?item ?itemLabel ?class ?classLabel ?projectLabel WHERE {
  VALUES ?item { wd:Q1 wd:Q367204 }
  ?item wdt:P31 ?class;
        wdt:P18 ?project.
  SERVICE wikibase:label { bd:serviceParam wikibase:language "en,en". } }

link to the query

When running the query there is a result for Q1 because there is an image, but there is no result for Q367204 because there isn't an image.

My question: How can I get results for both Q1 and Q367204 regardless if there is an image available or not?

sparqlwikidata-query-service


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