Am 03.12.2017 um 15:06 schrieb Fariz Darari:
Current state gives me one result, the Russian ruble, due to its preferred rank (notice the wdt prefix):
https://query.wikidata.org/#select%20%2a%0A%7B%20wd%3AQ159%20wdt%3AP38%20%3F...
Ah, right - the current answer would by convention be marked as preferred, so only it counts as "truthy". Sorry for the confusion.