<attributeGroup name="commonPropertiesIceHockey">
    <attribute name="player-count" type="string" use="optional">
        <annotation>
            <documentation>Number of players on the ice for the stat or action.</documentation>
        </annotation>
    </attribute>
    <attribute name="player-count-opposing" type="string" use="optional">
        <annotation>
            <documentation>Number of opposing players on the ice for the stat or action.</documentation>
        </annotation>
    </attribute>
    <attribute name="zone" use="optional">
        <annotation>
            <documentation>The zone on the rink for the stat or action: offensive | defensive | neutral.</documentation>
        </annotation>
        <simpleType>
            <restriction base="string">
                <enumeration value="offensive" />
                <enumeration value="defensive" />
                <enumeration value="neutral" />
            </restriction>
        </simpleType>
    </attribute>
    <attribute name="location" type="string" use="optional">
        <annotation>
            <documentation>Location of the action on the rink.</documentation>
        </annotation>
    </attribute>
</attributeGroup>