Assuming that the text is a set of questions, extract the test questions and return a list of JSON objects; Extract all questions only in Brazilian...

Assuming that the text is a set of questions, extract the test questions and return a list of JSON objects; Extract all questions only in Brazilian Portuguese; Each JSON object represents a test question; If it does not appear to be a test question, do not extract the JSON object; Always create the JSON object in the standard format with the keys: enunciado, itens, afirmacoes, alternativas, resposta, fonte e completa; If the question is incomplete and cannot be answered, put 'false' in the completa key;