Task: Text Simplification
Input (English): The serous membrane covering the heart and lining the mediastinum is referred to as the pericardium , the serous membrane lining the thoracic cavity and surrounding the lungs is referred to as the pleura , and that lining the abdominopelvic cavity and the viscera is referred to as the peritoneum .
Output (English): The serous membrane covering the heart and lining the is called the pericardium , the serous membrane lining the and surrounding the lungs is called the pleura , and that lining the and the viscera is called the .