<attribute name="recipient-type" use="required">
    <annotation>
        <documentation>Whether the receiver of the penalty was the team, the player, a coach, a ref, etc.</documentation>
    </annotation>
    <simpleType>
        <restriction base="string">
            <enumeration value="team" />
            <enumeration value="player" />
            <enumeration value="auxilliary" />
            <enumeration value="official" />
        </restriction>
    </simpleType>
</attribute>