> ## Documentation Index > Fetch the complete documentation index at: https://docs.openlit.io/llms.txt > Use this file to discover all available pages before exploring further. # Linked Entities > Connect a rule to a Context, Prompt, or Evaluation Type so matching returns real resources A rule only becomes useful once it's connected to something worth returning. The **Associated Entities** card on a rule's detail page lets you link the rule to resources that should come back when it matches. ## Entity types The entity types you can link today are: * **Context** - reusable knowledge or system instructions, from the [Context](/latest/openlit/prompts-experiments/context/overview) feature. * **Prompt** - a versioned prompt, from [Prompt Hub](/latest/openlit/prompts-experiments/prompt-hub/overview). * **Evaluation** - an Evaluation Type, from the Evaluations feature. ## Linking an entity 1. In the **Associated Entities** card, choose an **Entity Type**. 2. Pick from a dropdown of existing entities of that type - Context, Prompt, and Evaluation each have their own picker, populated from what already exists. 3. Click **Associate**. If the list is empty, you'll see "No entities associated yet." ## Removing a link Click the remove (X) icon next to a linked entity. You'll be asked to confirm: > Remove entity association? > This will remove the link between the rule and this entity. This only removes the link between the rule and the entity - it doesn't delete the Context, Prompt, or Evaluation Type itself. ## What happens when a rule matches When a rule matches at evaluation time, all of its linked entities are returned. If the caller asks for it, their full data is included too - for example, a Context's content, or a Prompt's compiled text. See the [Evaluate API](/latest/openlit/prompts-experiments/rule-engine/evaluate-api) page for the exact response shape. ## Linking from the other side You can also start the link from a Context or Prompt's own page instead of from the rule: * From a Context, see [Linking rules to a Context](/latest/openlit/prompts-experiments/context/link-rules). * From a Prompt, see [Linking rules to a Prompt](/latest/openlit/prompts-experiments/prompt-hub/rules). Both flows open the same "Create rule and link to..." dialog described in [Create & Manage Rules](/latest/openlit/prompts-experiments/rule-engine/create-and-manage-rules), pre-filled with the link back to that Context or Prompt. *** Confirm your conditions match before relying on the linked entities Retrieve linked entities - and their full data - from your application