query: SELECT ?item
  ?label ?title
  ?diff
  WHERE {
    ?item wdt:P195 wd:Q1568434.
    ?item wdt:P1476 ?title.
    ?item rdfs:label ?label. FILTER (lang(?label) = "en") 
  
    FILTER(substr(str(?title), strlen(?title)) = 's')
    FILTER(substr(str(?label), strlen(?label)) != 's')
    # seems in a whitespace regex "\s*" the "\" was left out
    
    BIND( ((strlen(?title)-strlen(?label))) AS ?diff)
    FILTER(?diff > 0 && ?diff < 4)
    
  #  FILTER regex(?title, concat(?label, 's+'), 'i')
  # for some reason this only catches single words ->
  # some difference in whitespace?
  # but applying "replace( [string] , '\\s+', '', 'i')" on both doesn't work either
  }
  ORDER BY ?diff
  LIMIT 1000