hardness

https://w3id.org/framester/wn/wn30/instances/synset-hardness-noun-4 <https://w3id.org/framester/wn/wn30/schema/NounSynset>

xsd:string hardness 
xsd:string 04710588-n 
ruggedness  @en-us
hardness  @en-us
103706350  @en-us
104512305  @en-us
xsd:string 0.875 
xsd:string
the quality of being difficult to do; "he assigned a series of problems of increasing hardness"; "the ruggedness of his exams caused half the class to fail"  @en-us
xsd:string 104710588 

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