sine qua non

https://w3id.org/framester/wn/wn30/instances/wordsense-sine_qua_non-noun-1 <https://w3id.org/framester/wn/wn30/schema/NounWordSense>

sine qua non 
xsd:string sine_qua_non%1:09:00:: 
xsd:int

risorse dalla linked data cloud