I want to display the first petition only when there is more than one in xml document

I have a xml with 2 petitioners where petitioner = true. I only want to display the first one even when if there is more than one. How do I do this? I am using a template for the petitioner which I have added here below.

Desired output is only one petition like this

<ext:ProtectedParty>
        <ext:PersonBirthDate ext:approximateDateIndicator="false" ext:currentIndicator="true">1969-08-06</ext:PersonBirthDate>
        <nc:PersonName>
            <nc:PersonFullName>MARKO, KEEM</nc:PersonFullName>
        </nc:PersonName>
        <ext:PersonRaceCode/>
        <nc:PersonSexCode>F </nc:PersonSexCode>
        <ext:PetitionerIndicator>true</ext:PetitionerIndicator>
    </ext:ProtectedParty>

Current output which is wrong

<ext:ProtectedParty>
            <ext:PersonBirthDate ext:approximateDateIndicator="false" ext:currentIndicator="true">1969-08-06</ext:PersonBirthDate>
            <nc:PersonName>
                <nc:PersonFullName>MARKO, KEEM</nc:PersonFullName>
            </nc:PersonName>
            <ext:PersonRaceCode/>
            <nc:PersonSexCode>F </nc:PersonSexCode>
            <ext:PetitionerIndicator>true</ext:PetitionerIndicator>
        </ext:ProtectedParty>
        <ext:ProtectedParty>
            <ext:PersonBirthDate ext:approximateDateIndicator="false" ext:currentIndicator="true">1978-08-01</ext:PersonBirthDate>
            <nc:PersonName>
                <nc:PersonFullName>JOANN, NENNI</nc:PersonFullName>
            </nc:PersonName>
            <ext:PersonRaceCode/>
            <nc:PersonSexCode>F </nc:PersonSexCode>
            <ext:PetitionerIndicator>true</ext:PetitionerIndicator>
        </ext:ProtectedParty>

My xml document

<ProtectionOrderParties>
<ProtectionOrderParty InternalPartyID="77">
    <ProtectionOrderPartyNames>
        <ProtectionOrderPartyName Current="true" InternalNameID="77" FormattedName="Marko, Keem"/>
    </ProtectionOrderPartyNames>
    <ProtectionOrderConnection>
        <Petitioner>true</Petitioner>
        <ProtectedParty>true</ProtectedParty>
    </ProtectionOrderConnection>
</ProtectionOrderParty>
<ProtectionOrderParty InternalPartyID="97">
    <ProtectionOrderPartyNames>
        <ProtectionOrderPartyName Current="true" InternalNameID="53" FormattedName="JoAnn, Nenni"/>
    </ProtectionOrderPartyNames>
    <ProtectionOrderConnection>
        <Petitioner>true</Petitioner>
        <ProtectedParty>true</ProtectedParty>
    </ProtectionOrderConnection>
</ProtectionOrderParty>

My xslt code

    <?xml version="1.0" encoding="UTF-8"?>
<xsl:stylesheet version="3.0" xmlns:xsl="http://ift.tt/tCZ8VR">
    <xsl:output method="xml" version="1.0" encoding="UTF-8" indent="yes"/>
    <xsl:template name="ProtectionOrder">
        <ext:ProtectionOrder>
<!--Petitioner-->
            <xsl:for-each select="ProtectionOrderParties/ProtectionOrderParty[(ProtectionOrderConnection/Petitioner='true') and (ProtectionOrderConnection/ProtectedParty='false')][1]">
                <xsl:for-each select="//Integration/Party[@InternalPartyID=current()/@InternalPartyID]">
                    <xsl:call-template name="Petitioner"/>
                </xsl:for-each>
            </xsl:for-each>
        </ext:ProtectionOrder>

    </xsl:template>

<!--Petitioner Template-->
    <xsl:template name="Petitioner">
        <ext:Petitioner>
            <ext:AddressReference>
                <xsl:for-each select="Address[@PartyCurrent='true']">
                    <xsl:attribute name="ext:currentIndicator"><xsl:value-of select="@PartyCurrent"/></xsl:attribute>
                    <nc:LocationReference>
                        <xsl:attribute name="s:ref"><xsl:text>INT</xsl:text><xsl:value-of select="@ID"/></xsl:attribute>
                    </nc:LocationReference>
                </xsl:for-each>
            </ext:AddressReference>
            <ext:PersonBirthDate>
                <xsl:choose>
                    <xsl:when test="DateOfBirth[@Current='true']">
                        <xsl:attribute name="ext:approximateDateIndicator">false</xsl:attribute>
                        <xsl:attribute name="ext:currentIndicator">true</xsl:attribute>
                        <xsl:value-of select="mscef:formatDate(string(DateOfBirth[@Current='true']))"/>
                    </xsl:when>
                    <xsl:when test="ApproximateDOB">
                        <xsl:attribute name="ext:approximateDateIndicator">true</xsl:attribute>
                        <xsl:attribute name="ext:currentIndicator">true</xsl:attribute>
                        <xsl:value-of select="mscef:formatDate(string(ApproximateDOB))"/>
                    </xsl:when>
                </xsl:choose>
            </ext:PersonBirthDate>
            <nc:PersonName>
                <nc:PersonGivenName>
                    <xsl:value-of select="PartyName/NameFirst"/>
                </nc:PersonGivenName>
                <nc:PersonMiddleName>
                    <xsl:value-of select="PartyName/NameMiddle"/>
                </nc:PersonMiddleName>
                <nc:PersonSurName>
                    <xsl:value-of select="PartyName/NameLast"/>
                </nc:PersonSurName>
                <nc:PersonNameSuffixText>
                    <xsl:value-of select="PartyName/NameSuffix"/>
                </nc:PersonNameSuffixText>
                <nc:PersonFullName>
                    <xsl:value-of select="PartyName/FormattedName"/>
                </nc:PersonFullName>
            </nc:PersonName>
            <ext:PersonRaceCode>
                <xsl:value-of select="//Case/CaseParty[@InternalPartyID=current()/@InternalPartyID]/ObservedRace/@Word"/>
            </ext:PersonRaceCode>
            <nc:PersonSexCode>
                <xsl:value-of select="Party/Gender/@Word"/>
            </nc:PersonSexCode>
        </ext:Petitioner>
    </xsl:template>
</xsl:stylesheet>