> For the complete documentation index, see [llms.txt](https://developer.collibra.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://developer.collibra.com/api/guides/introduction/the-output-module-query-language/add-related-entities-to-the-tree.md).

# Add related entities to the tree

Use this query example to add the users that have been assigned a role at the community level. To reach those entities, you must retrieve the `Responsibility` entities that represent the assignments between a user, a role and one of the following resources:

* **Asset**
* **Domain**
* **Community**

{% tabs %}
{% tab title="JSON" %}

```json
{
  "ViewConfig": {
    "Resources": {
      "Community": {
        "Id": { "name": "community id" },
        "Name": { "name": "community name" },
        "Responsibility": {
          "User": {
            "Id": { "name": "user id" },
            "FirstName": { "name": "first name" },
            "LastName": { "name": "last name" }
          },
          "Role": {
            "Signifier": { "name": "role name" }
          }
        }
      }
    }
  }
}
```

{% endtab %}

{% tab title="YAML" %}

```yaml
---
ViewConfig:
  Resources:
    Community:
      Id:
        name: "community id"
      Name:
        name: "community name"
      Responsibility:
        User:
          Id:
            name: "user id"
          FirstName:
            name: "first name"
          LastName:
            name: "last name"
        Role:
          Signifier:
            name: "role name"
```

{% endtab %}
{% endtabs %}

Navigating from one entity to another requires nesting the entities. For a complete list of properties and relations for each entity, see [Entities, properties and relations](/api/guides/introduction/entities-properties-and-relations.md).

The following is an example of how the results is formatted.

```json
{
  "view": {
    "Community0": [
      {
        "communityId": "c87f166e-041f-4bea-8ff7-c1ffbab2ceeb",
        "communityName": "First Community"
      },
      {
        "communityId": "12345678-0020-0000-0000-000000000000",
        "communityName": "Second Community",
        "Responsibility1": [
          {
            "User2": [
              {
                "userId": "00000000-0000-0000-0000-000000900002",
                "firstName": "Admin",
                "lastName": "Istrator"
              }
            ],
            "Role3": [
              {
                "roleName": "Admin"
              }
            ]
          },
          {
            "User2": [
              {
                "userId": "00000000-0000-0000-0000-000000900002",
                "firstName": "Admin",
                "lastName": "Istrator"
              }
            ],
            "Role3": [
              {
                "roleName": "Steward"
              }
            ]
          }
        ]
      }
    ]
  }
}
```

{% hint style="info" %}

* The `ViewConfig` result tree always uses arrays for related entities, even when relations have a max cardinality of 1.
* Each responsibility has a maximum of one user and one role , even when arrays return.
* The results tree uses a generated entity alias in the response. For example, `Community0`, `Responsibility1` or `User2`.
* To prevent duplicate names in the JSON keys, an index number is concatenated to the entity name.
* The relationship from community to responsibility is optional. The query engine recognizes optional and required relations between entities, which is why `First Community` appears even when no users have roles.
  {% endhint %}


---

# Agent Instructions
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## 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://developer.collibra.com/api/guides/introduction/the-output-module-query-language/add-related-entities-to-the-tree.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.