You are a highly experienced educational content creator  for Indian competitive exams such as Railway (Typist - Non_Technical_Posts) under the subject of General English or Hindi (as opted). The topic is **English Grammar**.. Your task is to generate a detailed **bilingual explanation (English + Hindi)** for a **mnemonic anagram letter** for topic English Grammar, using the following inputs.

    Generate a Markdown output using this structure:

    ---

    🧠 **Anagram (Short)**: SENTENCE  
    📖 **Expanded (English)**: Structure, Errors, Negation, Tenses, Enrichment, Noun, Conjunction, Error Correction  
    📖 **Expanded (Hindi)**: संरचना, त्रुटियाँ, नकारात्मकता, काल, समृद्धि, संज्ञा, संयोजक, त्रुटि सुधार

    ---

    ### 🔠 Letter: E / त्र — *Error Detection / त्रुटि पहचान*

    #### 📚 Concept:
    - EN: Error Detection  
    - HI: त्रुटि पहचान

    #### 🧠 Type:
    - EN: Error Detection  
    - HI: त्रुटि पहचान

    #### 📖 Description:
    - EN: Identifying grammatical errors in sentences related to agreement, tense, article usage, and syntax.  
    - HI: वाक्यों में व्याकरण संबंधी त्रुटियों को पहचानना जैसे संधि, काल, लेख और वाक्य विन्यास।

    #### 📌 Explanation:
    - EN: Identifying and correcting errors like tense mismatch, agreement errors, or incorrect word usage is vital for clarity.  
    - HI: काल में विसंगति, कर्ता-क्रिया मेल, या गलत शब्द प्रयोग की त्रुटि पहचान स्पष्टता के लिए आवश्यक है।

    #### ➗ Formula or Relation:
    - EN: **Correct Grammar = Agreement + Proper Tense + Appropriate Vocabulary**  
    - HI: **सही व्याकरण = मेल + उचित काल + उपयुक्त शब्दावली**

    #### 💡 Example Questions:
    **ENGLISH:**
    ["Identify and explain all grammatical errors in the sentence: 'The datas was collected by the teams who has worked hard in the late nights and early mornings.' Provide corrections for agreement and tense errors.", "Spot and correct the errors in the following sentence: 'Neither the supervisor nor the workers was ready to accept the new schedule although it had many benefits for productivity.' Justify each correction.", "Evaluate the sentence 'Each of the engineers are responsible for checking their equipments before the shift starts.' Identify subject-verb agreement issues and suggest improvements."]

    **HINDI:**
    ["इसके वाक्य में व्याकरणिक त्रुटियाँ पहचानें: 'डेटा टीमों द्वारा एकत्र किया गया था जिन्होंने देर रात और सुबह जल्दी काम किया था।' वाक्य संधि, काल और सर्वनाम त्रुटियों को सुधारें।", "त्रुटियों को पहचानें और सुधार करें: 'पर्यवेक्षक या कर्मचारी नई तालिका को स्वीकार करने के लिए तैयार नहीं था, जबकि यह उत्पादकता के लिए लाभकारी था।' प्रत्येक सुधार को समझाएँ।", "वाक्य 'प्रत्येक अभियंता अपनी उपकरणों की जाँच शुरूआती पाली से पहले करता है।' में कर्ता-क्रिया अनुरूपता की गलतियाँ पहचानें।"]

    ---
    object should have:
        - "mnemonic_letter_english", "mnemonic_letter_hindi"
        - "type_english", "type_hindi"
        - "description_english", "description_hindi"
        - "difficulty_level_english", "difficulty_level_hindi"
        - "exam_frequency_english", "exam_frequency_hindi"
        - "time_to_solve_english", "time_to_solve_hindi"
        - "clue_words_english": list of 4-5 identifying keywords/phrases
        - "clue_words_hindi": same in Hindi
        - "what_to_use_english", "what_to_use_hindi"
        - "formula_english", "formula_hindi"
        - "alternative_formulas_english", "alternative_formulas_hindi": list of 2-3 alternative formulas
        - "algorithm_english", "algorithm_hindi": step-by-step string list
        - "quick_method_english", "quick_method_hindi"

        - "example": answer all  the question give as Example Questions.
 
          - Require multi-step calculation or reasoning.
          - NOT be short phrases, fragments, or simplified school-level word problems.each Example Questions should be including:
            - "example_no"
            - "question_english", "question_hindi"
            - "solution_steps_english": step list
            - "solution_steps_hindi": step list
            - "answer_english", "answer_hindi"
            - "verification_english", "verification_hindi"

        - "variations_english", "variations_hindi": list of variation types
        - "related_concepts_english", "related_concepts_hindi": related subtopics or concepts
        - "common_mistakes_english", "common_mistakes_hindi": list of 10 traps or errors
        - "tip_english", "tip_hindi": short-cut or important tip
        - "prerequisite_knowledge_english", "prerequisite_knowledge_hindi": list of 3 concepts
        - "practice_problems_english", "practice_problems_hindi": list of 3  full-length and detailed practical, compact competitive-level example questions** per type.  
      ⚠️ NOTE : Ensure answer all the question of Example Questions in the example key

        Use simple, learner-friendly language and return only the JSON object in your response, formatted with proper indentation and structure.
        Use clear language suitable for aptitude learners and format the JSON cleanly

### 🔁 output JSon should be

```json
            { 
              "mnemonic_letter_english": "",
              "mnemonic_letter_hindi": "",
              "type_english": "",
              "type_hindi": "",
              "description_english": "",
              "description_hindi": "",
              "difficulty_level_english": "",
              "difficulty_level_hindi": "",
              "exam_frequency_english": "",
              "exam_frequency_hindi": "",
              "time_to_solve_english": "",
              "time_to_solve_hindi": "",
              "clue_words_english": [
                  "",
                  "",
                  "",
                  "",
                  ""
              ],
              "clue_words_hindi": [
                  "",
                  "",
                  "",
                  "",
                  ""
              ],
              "what_to_use_english": "",
              "what_to_use_hindi": "",
              "formula_english": "",
              "formula_hindi": "",
              "alternative_formulas_english": [
                  "",
                  ""
              ],
              "alternative_formulas_hindi": [
                  "",
                  ""
              ],
              "algorithm_english": [
                  "",
                  "",
                  "",
                  ""
              ],
              "algorithm_hindi": [
                  "",
                  "",
                  "",
                  ""
              ],
              "quick_method_english": "",
              "quick_method_hindi": "",
              "example": [
                  {
                  "example_no":"",
                  "question_english": "",
                  "question_hindi": "",
                  "solution_steps_english": [
                      "",
                      "",
                      "",
                      "",
                      ""
                  ],
                  "solution_steps_hindi": [
                      "",
                      "",
                      "",
                      "",
                      ""
                  ],
                  "answer_english": "",
                  "answer_hindi": "",
                  "verification_english": "",
                  "verification_hindi": ""
              }..,],
              "variations_english": [
                  "",
                  "",
                  ""
              ],
              "variations_hindi": [
                  "",
                  "",
                  ""
              ],
              "related_concepts_english": [
                  "",
                  "",
                  ""
              ],
              "related_concepts_hindi": [
                  "",
                  "",
                  ""
              ],
              "common_mistakes_english": [
                  "",
                  ""
              ],
              "common_mistakes_hindi": [
                  "",
                  ""
              ],
              "tip_english": "",
              "tip_hindi": "",
              "prerequisite_knowledge_english": [
                  "",
                  "",
                  ""
              ],
              "prerequisite_knowledge_hindi": [
                  "",
                  "",
                  ""
              ],
              "practice_problems_english": [
                  "",
                  ""
              ],
              "practice_problems_hindi": [
                  "",
                  ""
              ]
          }