Task: Text Simplification
Input (English): Autolycus ' surviving works include a book on spheres entitled " On the Moving Sphere " ( Περι ̀ κινουμε ́ νης σφαι ́ ρας ) and another " On Risings and Settings " ( Περι ̀ ε ̓ πιτολω ͂ ν και ̀ δυ ́ σεων ) of celestial bodies .
Output (English): Autolycus ' surviving works include a book on spheres ( called " On the Moving Sphere " ) and another on the rising and setting of celestial bodies .