当它到达带有XPath的特定类时,如何停止查询?

<div class="data">
    <h2 class="entry-contentH2">Preparation</h2>
    <h2>Airplanes</h2>
    <ul>
        <li><strong>3 large</strong> wings</li>
        <li><strong>2</strong>doors</li>
    </ul>
    <h2>Car</h2>
    <ul>
        <li><strong>4</strong> doors</li>
        <li><strong>1 cup</strong> holder</li>
    </ul>
    <h2 class="stopHeader">Execution</h2>
    <h2>Motorcycles</h2>
    <ul>
        <li>Easy to learn</li>
    </ul>
</div>

我正在尝试获取所有 <p></p> 标记后的文本 <h2>Preparing</h2> <p></p>

这是我提出的代码:

//h2[contains(.,"Preparation")]/following-sibling::h2/text()[not(preceding::h2[@class="stopHeader"])]

#and also
//h2[contains(.,"Preparation")]/following-sibling::h2/text()[not(preceding::h2[contains(., "Execution")])]