ASK WHERE { <http://dbpedia.org/resource/Lena_River> <http://dbpedia.org/ontology/rightTributary> <http://dbpedia.org/resource/Olyokma_River> }
Is Olyokma River the right tributary of Lena River?
ASK WHERE { resource:Lena_River property:right_tributary resource:Olyokma_River }
Yes
[Yes], Olyokma River is the right tributary of Lena River.
[Yes] Olekma is the right tributary of the Oki River.
[Yes], Olyokma River is  the right tributary of the organisation.
[Yes] the Olekma River is a loyal tributary of the organization.