query: SELECT ?sausage ?sausageLabel (GROUP_CONCAT(?country) as ?countries) ?image WHERE {
    SERVICE wikibase:label { bd:serviceParam wikibase:language "[AUTO_LANGUAGE],en". }
    ?sausage wdt:P279 wd:Q131419.
    OPTIONAL {?sausage wdt:P17 ?country.}
    OPTIONAL {?sausage wdt:P18 ?image. }
  }
  GROUP BY ?sausage ?sausageLabel ?image