<simpleType name="driveResult.AmericanFootball.Vocabulary">
    <restriction base="string">
        <enumeration value="score" />
        <enumeration value="score-attempt" />
        <enumeration value="punt" />
        <enumeration value="fumble" />
        <enumeration value="interception" />
        <enumeration value="marker-not-reached">
            <annotation>
                <documentation>On the final down, the team in possession did not reach the first-down marker.</documentation>
            </annotation>
        </enumeration>
    </restriction>
</simpleType>