PREFIX era: SELECT DISTINCT ?track ?p #?rinfIndex WHERE { GRAPH { VALUES ?inCountry {} . VALUES ?p {era:wheelSetGauge era:gaugingProfile era:railInclination era:eddyCurrentBraking era:magneticBraking era:minimumWheelDiameter era:minimumHorizontalRadius era:protectionLegacySystem era:legacyRadioSystem era:maximumTrainDeceleration era:gradientProfile era:hasHotAxleBoxDetector era:hasSevereWeatherConditions era:trackLoadCapability era:maximumBrakingDistance era:maximumPermittedSpeed era:hasAdditionalBrakingInformation era:minimumTemperature era:maximumTemperature era:cantDefficiency} ?track a era:Track . ?sectionOfLine era:track ?track . ?sectionOfLine a era:SectionOfLine . ?sectionOfLine era:inCountry ?inCountry. GRAPH {?p era:rinfIndex ?rinfIndex} . FILTER NOT EXISTS {?track ?p ?propertyValue .} } } ORDER BY ?track LIMIT 1000