Impact Page Extraction

Extract the following information from this charity's impact/results page. Return ONLY valid JSON matching the exact schema below.

CRITICAL EXTRACTION RULES:
- Only extract information that is EXPLICITLY stated on the page
- Do NOT infer, assume, or guess values
- If a field is not clearly present, return null
- For external evaluations (GiveWell, Charity Navigator, BBB): only include if the page EXPLICITLY mentions being rated or evaluated by that organization
- For zakat eligibility: only set to true if the page explicitly uses the word "zakat"
- For scholarly endorsements: only include names explicitly mentioned as endorsing the charity
- For impact metrics: only include numbers and statistics that are explicitly stated, never estimate or calculate

Required fields:
- impact_metrics: Object - Key impact metrics and statistics (flexible structure)

Optional fields:
- beneficiaries: String (20-1000 characters) - Description of beneficiaries served
- geographic_coverage: Array of strings (0-20 items) - Geographic reach of impact
- additional_info: String or null (max 2000 characters) - Additional impact information

Return JSON only. Do not include explanations or markdown formatting.