5.8 http://schemas.microsoft.com/office/drawing/2010/chartDrawing Schema

 <xsd:schema elementFormDefault="qualified" targetNamespace="http://schemas.microsoft.com/office/drawing/2010/chartDrawing" xmlns="http://schemas.microsoft.com/office/drawing/2010/chartDrawing" xmlns:xdr="http://schemas.openxmlformats.org/drawingml/2006/spreadsheetDrawing" xmlns:xdr14="http://xldr14SchemaUri" xmlns:a="http://schemas.openxmlformats.org/drawingml/2006/main" xmlns:a14="http://schemas.microsoft.com/office/drawing/2010/main" xmlns:r="http://schemas.openxmlformats.org/officeDocument/2006/relationships" xmlns:xsd="http://www.w3.org/2001/XMLSchema">
   <xsd:import schemaLocation="oart14docprop.xsd" namespace="http://schemas.microsoft.com/office/drawing/2010/main"/>
   <xsd:import schemaLocation="oartdocprop.xsd" namespace="http://schemas.openxmlformats.org/drawingml/2006/main"/>
   <xsd:import schemaLocation="orel.xsd" namespace="http://schemas.openxmlformats.org/officeDocument/2006/relationships"/>
   <xsd:complexType name="CT_ApplicationNonVisualDrawingProps">
     <xsd:attribute name="macro" type="xsd:string" use="optional"/>
     <xsd:attribute name="fPublished" type="xsd:boolean" use="optional" default="false"/>
   </xsd:complexType>
   <xsd:complexType name="CT_ContentPartNonVisual">
     <xsd:sequence>
       <xsd:element name="cNvPr" type="a:CT_NonVisualDrawingProps" minOccurs="1" maxOccurs="1"/>
       <xsd:element name="cNvContentPartPr" type="a14:CT_NonVisualInkContentPartProperties" minOccurs="0" maxOccurs="1"/>
     </xsd:sequence>
   </xsd:complexType>
   <xsd:complexType name="CT_ContentPart">
     <xsd:sequence>
       <xsd:element name="nvContentPartPr" type="CT_ContentPartNonVisual" minOccurs="0" maxOccurs="1"/>
       <xsd:element name="nvPr" type="CT_ApplicationNonVisualDrawingProps" minOccurs="0" maxOccurs="1"/>
       <xsd:element name="xfrm" type="a:CT_Transform2D" minOccurs="0" maxOccurs="1"/>
       <xsd:element name="extLst" type="a:CT_OfficeArtExtensionList" minOccurs="0" maxOccurs="1"/>
     </xsd:sequence>
     <xsd:attribute ref="r:id" use="required"/>
     <xsd:attribute name="bwMode" type="a:ST_BlackWhiteMode" use="optional" default="auto"/>
   </xsd:complexType>
   <xsd:element name="contentPart" type="CT_ContentPart"/>
 </xsd:schema>