我有一个文本文件，我想搜索如下标签：
<category="SpecificDisease">Type II human complement C2 deficiency</category>
<category="Modifier">Huntington disease</category>
<category="CompositeMention">hereditary breast and ovarian cancer</category>
<category="DiseaseClass">myopathy</category>
并生成以下内容并将它们写入新的文本文件。
Type II human complement C2 deficiency
Huntington disease
hereditary breast and ovarian cancer
myopathy