What can we know about Harry Potter and the Portrait of What Looked Like a Large Pile of Ash from the text?

参考解析：

推理判断题。根据文章第五段第一句“It continues in this vein: almost making sense, but mostly just gloriously bonkers”可知，这种风格继续往下，大多数还算合情理，就是颇有些理直气壮的疯气，故排除A选项；根据文章第三段第二句“And the following sounds plausibly Pottery”可知，接下来这一段听起来很有哈利的风格，因此B选项表述错误；原文并未提及《哈利·波特与一坨看起来像灰烬的东西的画像》具体是有谁执笔的，故C项表述错误；根据文章第六段最后一句“Botnik explains, by analysing a body of text ‘to find combinations of words likely to follow each other’ based on the grammar and vocabulary used”可知，该公司称，它的工作原理是基于分析某一文本的语法和词汇，“找到词与词之间组合的概率，因此D项表述正确。故选D。