PREFIX era:
PREFIX xsd:
SELECT DISTINCT ?country (COUNT(DISTINCT ?track) AS ?countTracks)
WHERE {
GRAPH {
?sectionOfLine a era:SectionOfLine .
?sectionOfLine era:inCountry ?country .
?sectionOfLine era:track ?track .
?track a era:Track .
?track era:hasTSITrainDetection "false"^^xsd:boolean
}
} ORDER BY ?country