PREFIX ns: <http://richcanvas.io/ns#>
PREFIX trvl: <http://richcanvas.io/travel#>

SELECT ?travelName ?activitySpecName
WHERE {
?travel ns:enable ?activity .
?activity ns:correspondsTo ?activitySpec .
?activitySpec ns:name ?activitySpecName .
?travel ns:name ?travelName
}


PREFIX ns: <http://richcanvas.io/ns#>
PREFIX trvl: <http://richcanvas.io/travel#>

SELECT ?traveler ?travelName
WHERE {
?traveler ns:hasManifestation ?travel 
?travel ns:name ?travelName
}