If a question was relevant to the content and the corresponding answer was correct, we classified this instance as True Positive (TP). If the question was hallucinated but the answer was still correct, or if the LLM correctly identified the question as hallucinated-such as by responding with "this question is not related to the content" or "I don't know the answer"-we marked this as True Negative (TN). In cases where the question was well-formed but the answer was incorrect, we categorized the outcome as False Positive (FP). If the question was irrelevant to the main text and the LLM failed to identify it as hallucinated, we classified it as False Negative (FN).