# The Side Bar: Secondary Object Types

On the left-hand side bar, you will also find icons that represent the secondary Object types, Bibliography, Period, Location, Person, Style and Image:

<figure><img src="/files/Dah6dQstKyEXhLtbxQ7z" alt="" width="296"><figcaption></figcaption></figure>

To search the data in the Census related to one of these Object types, click on one of these icons. You can then carry out a search using the free text search bar or the Advanced Search function.&#x20;

Unlike the Primary Object types (Antique Monument and Postclassical Work), these categories can only be searched singly, not in combination.


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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/the-side-bar-secondary-object-types.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.