diff --git a/prompts/_output_format.md b/prompts/_output_format.md
index 207193a..b918138 100644
--- a/prompts/_output_format.md
+++ b/prompts/_output_format.md
@@ -6,7 +6,7 @@ introduction, no commentary outside the JSON.
 | Key | Type | Rules |
 |---|---|---|
 | `full_advice` | string | Your complete advisory text, in Italian. |
-| `advice_summary` | string | Italian summary of `full_advice`, **at most 1010 characters**. It must state the recommendation: whether a treatment should be administered or not; if yes, for what reason, on what date and with which product; if no, for what reason. |
+| `advice_summary` | string | Italian summary of `full_advice`, **at most 1010 characters**. It must state the recommendation: whether a treatment should be administered or not; if yes, for what reason, on what date (and why that date), and with which product; if no, for what reason. |
 | `apply_treatment` | integer | `1` if you recommend applying a product, `0` otherwise. |
 | `treatments` | array of strings | Names of the recommended product(s), exactly as written in the input payload. Empty array `[]` when you recommend no product. |
 | `dosage` | array of strings | Prescribed dose for each product in `treatments`, in the same order (for example `"1.5 l/ha"`). Empty array `[]` when you recommend no product. |