Question: The IERS Reference Meridian (IRM), is the prime meridian (0° longitude) maintained by which organization, it is also the reference meridian of the Global Positioning System (GPS), originally Navstar GPS, is a space-based radionavigation system owned by the United States government and operated by the United States Air Force?
{'answer': 'International Earth Rotation and Reference Systems Service (IERS)', 'supporting_facts': [['IERS Reference Meridian', 0], ['Global Positioning System', 0]]}