Task: Question Generation
Input (English): In Victorian London, Dr. Mortimer Granville, a young doctor struggles to establish himself. He is hired by Dr. Robert Dalrymple who is renowned for treating women diagnosed with female hysteria using 'pelvic massage'. Hysteria was originally defined as a neurotic condition peculiar to women and thought to be caused by a dysfunction of the uterus. By the 19th century, hysteria came to be defined as a more generalized sexual dysfunction. Mortimer devises various different methods of pelvic massage, undertaking various experiments in his quest.Dr. Granville sets about becoming an expert in the problem, seeking devices to remedy the problem. However, he develops carpal tunnel due to all the manual labor required in stimulation. His invention is the vibrator.Dr. Dalrymple's two daughters develop an interest in the young Dr. Granville, each attempting to woo him.
Output (English): What does Dr. Granville invent?