SELECT DISTINCT ?auth ?authItemLabel ?desc ?linkPattern ?countryLabel ?remoteID WHERE 
{
   ?authItem wdt:P31 ?authTypes; schema:description ?desc; wdt:P1630 ?linkPattern; wikibase:directClaim ?auth . 
  OPTIONAL { ?authItem wdt:P17 ?country. }
  wd:Q7561898 ?auth ?remoteID . 
  FILTER((LANG(?desc)) = "en") 
  FILTER(?authTypes IN (wd:Q19595382, wd:Q21745557, wd:Q55653847)) 
  SERVICE wikibase:label { bd:serviceParam wikibase:language "[AUTO_LANGUAGE],en". }
} 
ORDER BY ?countryLabel

SELECT ?compound ?compoundLabel ?prop ?id ?idLabel WHERE 
{ 
  VALUES ?compound {wd:Q27295794} 
  VALUES ?prop { wdt:P231 wdt:P232 wdt:P267 wdt:P486 wdt:P592 wdt:P595 wdt:P652 wdt:P661 wdt:P662 wdt:P665 wdt:P683 wdt:P715 wdt:P2115 wdt:P2892 wdt:P3345 wdt:P3636 wdt:P2017 wdt:P274 wdt:P233 wdt:P234 wdt:P235 wdt:P129 wdt:P2175 wdt:P2868 wdt:P3489 wdt:P3780 wdt:P2275 skos:altLabel} 
  OPTIONAL {?compound ?prop ?id filter (isIRI(?id) || (lang(?id) = "en" || lang(?id) = "")) .} 
  SERVICE wikibase:label { bd:serviceParam wikibase:language "[AUTO_LANGUAGE],en". } 
}

SELECT ?item ?itemLabel WHERE { 
  { 
    SELECT (MIN(?item) AS ?item) WHERE {?item wdt:P373 "A Topographical and Historical Description of London and Middlesex (1820) by Bayley, Brewer and Nightingale" 
    FILTER NOT EXISTS {?item wdt:P31 wd:Q4167836} 
  } 
  } 
  SERVICE wikibase:label { bd:serviceParam wikibase:language "en" } 
}

WITH {
  QueryType: SELECT
  SELECT ( com.bigdata.rdf.sparql.ast.FunctionNode(VarNode(item))[ FunctionNode.scalarVals=null, FunctionNode.functionURI=http://www.w3.org/2006/sparql-functions#min, valueExpr=com.bigdata.bop.rdf.aggregate.MIN(item)] AS VarNode(item) )
    JoinGroupNode {
      StatementPatternNode(VarNode(item), ConstantNode(Vocab(6)[http://www.wikidata.org/prop/direct/P]:XSDUnsignedShort(373)), ConstantNode(TermId(1466429127L)[A Topographical and Historical Description of London and Middlesex (1820) by Bayley, Brewer and Nightingale])) [scope=DEFAULT_CONTEXTS]
        AST2BOpBase.estimatedCardinality=1
        AST2BOpBase.originalIndex=POS
      QueryType: ASK
      SELECT VarNode(item) VarNode(-exists-1)[anonymous]
        JoinGroupNode {
          StatementPatternNode(VarNode(item), ConstantNode(Vocab(6)[http://www.wikidata.org/prop/direct/P]:XSDUnsignedByte(31)), ConstantNode(Vocab(2)[http://www.wikidata.org/entity/Q]:XSDUnsignedInt(4167836))) [scope=DEFAULT_CONTEXTS]
            AST2BOpBase.estimatedCardinality=4309882
            AST2BOpBase.originalIndex=POS
        } AST2BOpBase.estimatedCardinality=4309882
      @askVar=-exists-1
      FILTER( NotExistsNode(VarNode(-exists-1))[ FunctionNode.scalarVals=null, FunctionNode.functionURI=http://www.bigdata.com/sparql-1.1-undefined-functionsnot-exists, graphPattern=
        JoinGroupNode {
          StatementPatternNode(VarNode(item), ConstantNode(Vocab(6)[http://www.wikidata.org/prop/direct/P]:XSDUnsignedByte(31)), ConstantNode(Vocab(2)[http://www.wikidata.org/entity/Q]:XSDUnsignedInt(4167836))) [scope=DEFAULT_CONTEXTS]
            AST2BOpBase.estimatedCardinality=4309882
            AST2BOpBase.originalIndex=POS
        } AST2BOpBase.estimatedCardinality=4309882, valueExpr=com.bigdata.rdf.internal.constraints.NotBOp(com.bigdata.rdf.internal.constraints.EBVBOp(-exists-1))] )
    }
} AS -subSelect-1 JOIN ON () DEPENDS ON ()
QueryType: SELECT
includeInferred=true
timeout=600000
SELECT ( VarNode(item) AS VarNode(item) ) ( VarNode(itemLabel) AS VarNode(itemLabel) )
  JoinGroupNode {
    SERVICE <ConstantNode(TermId(0U)[http://wikiba.se/ontology#label])> {
      JoinGroupNode {
        StatementPatternNode(ConstantNode(TermId(0U)[http://www.bigdata.com/rdf#serviceParam]), ConstantNode(TermId(0U)[http://wikiba.se/ontology#language]), ConstantNode(TermId(17380L)[en])) [scope=DEFAULT_CONTEXTS]
        StatementPatternNode(VarNode(item), ConstantNode(Vocab(74)[http://www.w3.org/2000/01/rdf-schema#label]), VarNode(itemLabel)) [scope=DEFAULT_CONTEXTS]
      }
    }
    INCLUDE -subSelect-1 JOIN ON ()
  }

SELECT ?parent ?parentLabel WHERE { 
  wd:Q174097 wdt:P31/wdt:P279* ?parent . 
  SERVICE wikibase:label { bd:serviceParam wikibase:language "en" } 
}

SELECT ?count ?gender ?genderLabel WITH 
{ 
  SELECT (COUNT(DISTINCT ?researcher) AS ?count) ?gender WHERE { ?researcher ( wdt:P108 | wdt:P463 | wdt:P1416 ) / wdt:P361* wd:Q1269766 . ?researcher wdt:P21 ?gender . } GROUP BY ?gender 
} AS %result WHERE { 
  INCLUDE %result 
  SERVICE wikibase:label { bd:serviceParam wikibase:language "en,da,de,ep,fr,jp,nl,no,ru,sv,zh" . } 
} 
ORDER BY DESC(?count)

SELECT ?item ?name ?coord WHERE {
    wd:Q12988 wdt:P625 ?Firstloc .
    wd:Q184287 wdt:P625 ?Secondloc .
    SERVICE wikibase:box
    {
        ?item wdt:P625 ?coord .
        bd:serviceParam wikibase:cornerNorthEast ?Firstloc .
        bd:serviceParam wikibase:cornerSouthWest ?Secondloc .
    }
    SERVICE wikibase:label
    {
        bd:serviceParam wikibase:language "fr" .
        ?item rdfs:label ?name
    }
}
ORDER BY ASC(?name)

SELECT ?pLabel ?prop ?val ?valLabel WHERE {
    wd:Q8486 ?prop ?val .
    ?ps wikibase:directClaim ?prop .
    ?ps rdfs:label ?pLabel .
    SERVICE wikibase:label
    {
        bd:serviceParam wikibase:language 'en' .
    }
    FILTER ((LANG(?valLabel)) = 'en' && (?prop != wdt:P18))
}

SPARQL semantics is defined bottom up, and in the query we detected a variable that is used in a value expression but known not to be in scope when evaluating the value expression. To fix the problem, you may want to push the construct binding the variable (this might be a triple pattern, BIND, or VALUES clause) inside the scope in which the variable is used. The affected variable is 'valLabel', which has been renamed in the optimized AST to '-unbound-var-valLabel-0' in order to avoid conflicts.

SELECT ?pLabel ?prop ?val ?valLabel WHERE {
    wd:Q8486 ?prop ?val .
    ?ps wikibase:directClaim ?prop .
    ?ps rdfs:label ?pLabel .
    FILTER (?prop != wdt:P18)
    SERVICE wikibase:label
    {
        bd:serviceParam wikibase:language 'en' .
    }
    FILTER (LANG(?valLabel) != 'fr')
}

SELECT ?pLabel ?prop ?val ?valLabel WHERE {  
  wd:Q8486 ?prop ?val .   
  ?ps wikibase:directClaim ?prop .   
  ?ps rdfs:label ?pLabel .   
  SERVICE wikibase:label {     
    bd:serviceParam wikibase:language 'en'.   
  }   
  FILTER ((LANG(?pLabel )) = 'en' && (?prop != wdt:P18))}