<xs:attributeGroup name="quantifyAttributes">
    <xs:annotation>
        <xs:documentation>A group of attriubutes quantifying the property value</xs:documentation>
    </xs:annotation>
    <xs:attribute name="confidence" type="Int100Type">
        <xs:annotation>
            <xs:documentation>The confidence with which the metadata has been assigned.</xs:documentation>
        </xs:annotation>
    </xs:attribute>
    <xs:attribute name="relevance" type="Int100Type">
        <xs:annotation>
            <xs:documentation>The relevance of the metadata to the news content to which it is attached.</xs:documentation>
        </xs:annotation>
    </xs:attribute>
    <xs:attribute name="why" type="QCodeType">
        <xs:annotation>
            <xs:documentation>Why the metadata has been included.</xs:documentation>
        </xs:annotation>
    </xs:attribute>
</xs:attributeGroup>