has polymorphic JSON schema The following shape defines a polymorphic "peak width" facet: af-s:AFS_0005312 a sh:PropertyShape ; sh:path af-x:AFX_0002803 ; # has facet sh:qualifiedValueShape [ sh:class af-r:AFR_0001075 ; # peak width af-x:AFX_0002874 true # generate polymorphic JSON schema ] ; sh:qualifiedMinCount 1 ; . It is translated to a JSON schema that allows one of "peak width at half height": {} "peak width at 5% height": {} "peak width at 10% height": {} "peak width at baseline" : {} If the 'has polymorphic JSON schema' annotation is false or unspecified, then only "peak width": {} is allowed and the JSON schema is more restrictive than the SHACL shape. A shape that describes a facet by sh:qualifiedValueShape in an Allotrope Simple Model (ASM) shape library can be marked with this annotation property. The property controls how the facet is translated into a JSON schema for the property. By setting this property to true, the JSON schema behaves as in SHACL, allowing subclasses to be used, otherwise the class is used directly. [Allotrope] has polymorphic JSON schema note Shape