> 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/knowledge-graph/related-entities.md).

# Related entities

Some fields can refer to other entities. In this case, you can make a sub-selection of fields for that entity. GraphQL queries can traverse related entities and their fields, allowing you to retrieve related data in one request. The following example adds the asset parent domain and parent community to the initial basic query:

{% columns %}
{% column %}
{% code title="Query" %}

```graphql
query {
  assets {
     id
     fullName
     domain {
       name
       parent {
         name
      }
    }
  }
}
```

{% endcode %}
{% endcolumn %}

{% column %}
{% code title="Response" %}

```json
{
  "data": {
    "assets": [
      {
        "id": "00000000-0000-0000-0000-000000005015",
        "fullName": "Community Manager",
        "domain": {
          "name": "Roles",
          "parent": {
            "name": "Admin Community"
          }
        }
      }
    ]
  }
}
```

{% endcode %}
{% endcolumn %}
{% endcolumns %}

Some fields are collections and they can contain multiple related entities, for example a community can have multiple child domains:

{% columns %}
{% column %}
{% code title="Query" %}

```graphql
query {
  communities(limit: 1) {
    name
    subDomains(limit: 3) {
      name
    }
  }
}
```

{% endcode %}
{% endcolumn %}

{% column %}
{% code title="Response" %}

```json
{
  "data": {
    "communities": [
      {
        "name": "Admin Community",
        "subDomains": [
          {
            "name": "System"
          },
          {
            "name": "Workflow Definitions"
          },
          {
            "name": "Complex Relations"
          }
        ]
      }
    ]
  }
}
```

{% endcode %}
{% endcolumn %}
{% endcolumns %}

{% hint style="info" %}
For every collection field you can specify the maximum number of returned items with the `limit` argument. For additional details, see [Pagination](/api/guides/knowledge-graph/pagination.md).
{% endhint %}