@Mansi Gusain I think this is related to one of your previous threads about Refresh URL. Adding here for reference.
To add more context about structured and unstructured data, there is a documentation along with reference documents that define how the API looks at data. See this page.
If you need to build a structured text, I recommend using Structured TXT, TSV and XLS Files since they might be easy to create from scratch. A web page as structured text might work for cases like manuals or FAQ docs, if dynamic content is displayed with images or videos, it is highly likely it is categorized as unstructured.
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