All Values must have same DataType Shape
Data Item {$this} has type {?valueType}.
SELECT $this ?valueType WHERE { $this qudt:datatype/qudt:rdfsDatatype ?datatype . $this qudt:value ?valueList. ?valueList rdf:rest*/rdf:first ?value . BIND(datatype(?value) as ?valueType) . FILTER(?valueType != ?datatype) }