咩係gy?

Gy or GY may refer to:
In Measurement:
gray (unit) (Gy), SI unit of absorbed radiationgiga-year (see Byr), 1,000,000,000 years (non-SI)A galactic year, the time it takes for the solar system to orbit the galactic center Places:
Gy, Switzerland, a village in the Geneva cantonGuyana (ISO country code: GY)GY postcode area for Guernsey'GY' is a term for Grimsby, United Kingdom in its local dialectGy, a commune in the Haute-Saône département of France In transport:
GY, a Mazda automotive piston engineGabon Airlines (IATA code: GY)Tri-MG Intra Asia Airlines (IATA code: GY)Guyana Airways 2000 (IATA code: GY) People:
Pierre Gy, French chemist and statisticianGarin de Gy, 14th century Catholic Master of the Order of Preachers Other:
Hungarian gy, an alphabetic digrapha digraph in the Tibetan Pinyin transliteration systemGenCorp Inc. (GY NYSE symbol)Green Youth (disambiguation), one of two Green party youth wings .gy is the Internet country code top-level domain (ccTLD) for Guyana. It is administered and managed by the University of Guyana website.
So, which one is your answer?