<element name="sports-property">
    <annotation>
        <documentation>An extensible property. | Like in NewsML.</documentation>
    </annotation>
    <complexType>
        <sequence>
            <element ref="sportsml:sports-property" minOccurs="0" maxOccurs="unbounded" />
        </sequence>
        <attributeGroup ref="sportsml:globalAttributes" />
        <attribute name="formal-name" type="string" use="optional">
            <annotation>
                <documentation>The code or key for the property.</documentation>
            </annotation>
        </attribute>
        <attribute name="vocabulary" type="string" use="optional">
            <annotation>
                <documentation>Provides a pointer to a Topic Set which is the controlled vocabulary that can be used to resolve the meaning of the formal-name.</documentation>
            </annotation>
        </attribute>
        <attribute name="scheme" type="string" use="optional">
            <annotation>
                <documentation>Distinguishes which of possibly multiple naming schemes in the controlled vocabulary is the one that governs this formal-name.</documentation>
            </annotation>
        </attribute>
        <attribute name="value" type="string" use="optional">
            <annotation>
                <documentation>The value of the property. For example, if formal-name equals favorite-color, then value might equal blue.</documentation>
            </annotation>
        </attribute>
        <attribute name="allowed-values" type="string" use="optional">
            <annotation>
                <documentation>Points to a controlled vocabulary that delimits the set of allowed values for the property.</documentation>
            </annotation>
        </attribute>
    </complexType>
</element>