PREFIX ex: <http://a.example>
PREFIX sx: <http://www.w3.org/ns/shex
PREFIX xsd: <http://www.w3.org/2001/XMLSchema
[] a sx:Schema ;
sx:shapes (
_:vc1) .
_:vc1 a sx:ShapeDecl ; sx:shapeExpr [ a sx:NodeConstraint ;
sx:minlength 5 ;
sx:nodeKind sx:literal ] .