# Data Sets and Sources

The first step of a search in the database is to select the data you would like to search. You may select from:

* The Primary Object types: Antique Monument or Postclassical Works. These sources can be searched [either individually or in combination using the Sources Menu.](/navigating-and-searching/data-sets-and-sources/the-sources-menu-primary-object-types.md)
* The Secondary Object types: Location, Period, Person, Style, Bibliography, or Image. These can be [searched individually by clicking on the icons on the left-hand side bar](/navigating-and-searching/data-sets-and-sources/the-side-bar-secondary-object-types.md).


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# Agent Instructions: Querying This Documentation

If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.

Perform an HTTP GET request on the current page URL with the `ask` query parameter:

```
GET https://docs.census.de/navigating-and-searching/data-sets-and-sources.md?ask=<question>
```

The question should be specific, self-contained, and written in natural language.
The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.