You are tasked with generating synthetic data for readability control.
Given a topic and original language, produce three rewritten versions of the same content with different readability levels (easy, intermediate, hard).
	* Easy (Fernández Huerta 70–100, grade 5–7): Simple vocabulary and short sentences, suitable for younger readers.
	* Intermediate (Fernández Huerta 50–70, grade 8–12): Moderate complexity, suitable for high school readers.
	* Hard (Fernández Huerta 0–50, university/professional): Technical, specialized vocabulary and detailed descriptions, suitable for experts.
Return the output in the following JSON format (no extra text):
{
  "id": <number>,
  "original_text_language": "<language_code>",
  "source_topic": "<topic>",
  "readability_versions": {
    "easy": {
      "readability_level": "easy",
      "fernandez_huerta_range": "70-100",
      "target_audience": "Estudiantes de primaria/media (5º a 7º grado)",
      "text": "<simplified version of the text>"
    },
    "intermediate": {
      "readability_level": "intermediate",
      "fernandez_huerta_range": "50-70",
      "target_audience": "Secundaria/Bachillerato (8º a 12º grado)",
      "text": "<moderately complex version of the text>"
    },
    "hard": {
      "readability_level": "hard",
      "fernandez_huerta_range": "0-50",
      "target_audience": "Profesionales / Universidad o posgrado",
      "text": "<specialized, technical version of the text>"
    }
  }
}