xpath is failing me

[Osagie_1]

I have an xml structure :

<Articles>

    <Article ID="111">
        <author>Peter Paul</author>
        <pubDate>01/01/2015</pubDate>  
        <Translations>
            <lang1>English</lang1>
            <lang2>French</lang2>
            <lang3>Arab</lang3>
            <lang3>Chinese</lang3>
        </Translations>
    </Article>

    <Article ID="222">
        <author>Monkey Rice</author>
        <pubDate>01/01/2016</pubDate>  
        <Translations>
            <lang1>English</lang1> 
        </Translations>
    </Article>

    <Article ID="333">
        <author>John Silas</author>
        <pubDate>01/01/2017</pubDate>  
        <Translations>
            <lang1>English</lang1>
            <lang2>French</lang2>
            <lang3>Arab</lang3>
            <lang3>Chinese</lang3>
        </Translations>
    </Article>

</Articles>

i created a method AddRecordByInfoMatch() that attempts to
add new node to any <Article> of a given ID anywhere as long
as a match exists:

function AddRecordByInfoMatch($ParentID, $Info_1, $Info_2, $Info_3, array $Record){

            $xml = new SimpleXMLElement(blabla.xml);
            $result = $xml->xpath("//*[@ID='$ParentID']");      //get the article ID


            if(!empty($result)){
                foreach($result[0] as $key => $value){

                    $noofChild = count($value);
                    //three info match may lakely be within 3 sub-nodes 
                    if($noofChild >= 3){

                        $query = "//*[node()[contains(text(), \"$Info_1\")] and node()[contains(text(), \"$Info_2\")] and node()[contains(text(), \"$Info_3\")]]";

                        $data = $xml->xpath($query);

                        if(!empty($data[0]){
                                foreach ($Record as $nodname => $val){     
                                    $data[0]->addChild($nodname, $val);   
                                }
                        }    
                    }
                }
            }
}

with ID = 333 in mind, i test-ran it like this :

XMLAddRecordByInfoMatch(333, "English", "French", "Chinese", array( 
            "syntax" => irrelevant,
            "adjectives" => None,
            "verbs" => 2,
            "prepositions" => 5 
        ));

unfortunately, the output; upon display, added the new record to Article
with ID 111 to give :

...
<Article ID="111">
        <author>Peter Paul</author>
        <pubDate>01/01/2015</pubDate>  
        <Translations>
            <lang1>English</lang1>
            <lang2>French</lang2>
            <lang3>Arab</lang3>
            <lang3>Chinese</lang3>

            <syntax>irrelevant</syntax>
            <adjectives>None</adjectives>
            <verbs>2</verbs>
            <prepositions>5</prepositions>

        </Translations>
    </Article>
...

and i expected this to be within the Article node of ID 333, which
i specified. what am i doing wrong in my xpath xpression ?? or how
can i achieve this ? any help will be highly regarded. Happy new year all.