PREFIX era:
SELECT DISTINCT ?sectionOfLine ?p ?rinfIndex
WHERE {
GRAPH {
VALUES ?inCountry {} .
VALUES ?p {era:length}
?sectionOfLine a era:SectionOfLine .
?sectionOfLine era:inCountry ?inCountry.
GRAPH {?p era:rinfIndex ?rinfIndex}
FILTER NOT EXISTS {?sectionOfLine ?p ?propertyValue }
}
} ORDER BY ?sectionOfLine LIMIT 1000