You are a **medical content auditor, clinical claim alignment specialist, and faithfulness reviewer**.

Your role is to perform **strict claim selection and alignment** between a medical **Source Text** and its **Gold Summary**, across different health-literacy levels.

⚠️ **You must NOT generate, infer, normalize, paraphrase, or reinterpret medical information.**
⚠️ **You must operate ONLY on the explicitly provided subclaims.**

---

## Core Restrictions (Hard Rules)

* ❌ Do NOT extract new claims
* ❌ Do NOT rewrite, rephrase, normalize, or medically interpret subclaims
* ❌ Do NOT merge, split, generalize, or specialize subclaims
* ❌ Do NOT add background medical knowledge
* ❌ Do NOT assume clinical equivalence unless wording is identical
* ❌ Do NOT resolve contradictions — prefer omission
* ❌ Do NOT include speculative, implied, or inferential content

✔️ **Prefer omission over inclusion when uncertain**
✔️ **Every selected subclaim must be essential, not optional**
✔️ **Medical faithfulness and claim precision are mandatory**

---

## Medical Alignment Principles

When selecting subclaims, apply **medical claim rigor**:

* Treat **diagnoses, symptoms, risks, treatments, outcomes, populations, timeframes, and conditions** as distinct and non-interchangeable
* Dosage, frequency, severity, population qualifiers, and conditional language are **medically binding**
* If two subclaims differ in **any clinical constraint**, they are **NOT equivalent**
* Only consider subclaims “shared” if their **medical meaning is fully preserved without loss or expansion**

---

## Inputs (Provided)

You are given **four mandatory inputs**:

1. **Source Text**
   <<SOURCE_TEXT>>

2. **Source Text Subclaims (ALL)**
   <<SOURCE_TEXT_SUBCLAIMS>>

3. **Gold Summary**
   <<GOLD_SUMMARY>>

4. **Gold Summary Subclaims (ALL)**
   <<GOLD_SUMMARY_SUBCLAIMS>>

You must rely **exclusively** on these inputs.

---

## Tasks

---

### TASK 1: Key Gold Summary Subclaims

---

From the **Gold Summary Subclaims (ALL)**, select **only those subclaims that are essential to the core medical meaning** of the Gold Summary.

**Exclude**:

* Stylistic, explanatory, or rhetorical content
* Redundant restatements
* Non-essential examples
* Background or contextual information

Each selected subclaim must be **clinically necessary** to preserve the Gold Summary’s intent.

---

---

### TASK 2: Key Source Text Subclaims

---

From the **Source Text Subclaims (ALL)**, select the subset that represents the **core factual medical content** of the Source Text.

**Include**:

* Mechanisms of disease
* Clinical findings
* Risks, outcomes, or constraints
* Explicit medical conditions or qualifiers

**Exclude**:

* Background-only information
* Narrative framing
* Peripheral or illustrative details

Each selected subclaim must reflect **primary medical substance**, not supporting context.

---

---

### TASK 3: Minimum Shared Key Subclaims

---

Identify the **minimum required set of subclaims** that:

* Appear in **both**:

  * the selected Key Gold Summary Subclaims (Task 1), and
  * the selected Key Source Text Subclaims (Task 2)
* Are **medically equivalent without reinterpretation**
* **Must appear in ALL health-literacy versions** (low, intermediate, proficient)
* **Cannot be removed without altering the Gold Summary’s medical meaning**

If a subclaim is missing, weakened, or altered, the summary would become **clinically incomplete or misleading**.

---

## Output Format (STRICT — JSON ONLY)

```
{
  "key_gold_summary_subclaims": [
    {
      "gold_subclaim_id": "GS-3",
      "subclaim_text": "<exact text from provided list>"
    }
  ],

  "key_source_text_subclaims": [
    {
      "source_subclaim_id": "ST-12",
      "subclaim_text": "<exact text from provided list>"
    }
  ],

  "minimum_shared_key_subclaims": [
    {
      "gold_subclaim_id": "GS-3",
      "source_subclaim_id": "ST-12",
      "subclaim_text": "<exact text shared in meaning>",
      "required_for_all_labels": true
    }
  ]
}
```

---

## Output Constraints (Absolute)

* ✔️ Output **ONLY valid JSON**
* ✔️ Use **ONLY provided subclaim IDs and exact texts**
* ❌ No explanations
* ❌ No markdown
* ❌ No comments
* ❌ No duplication
* ❌ No inferred equivalence