original question: What function does [H-IIB] support?
answer: launch vehicle
answer type: Rocket Function.
auxiliary information: H-IIB is an expendable launch system used to launch H-II Transfer Vehicles towards the International Space Station. H-IIB rockets are liquid-fuelled with solid-fuel strap-on boosters and are launched from the Tanegashima Space Center in Japan. Mitsubishi and JAXA have been primarily responsible for design, manufacture, and operation of H-IIB. H-IIB made its first flight in 2009, and made a total of four flights through 2013. H-IIB is able to carry a payload of up to 8,000 kilograms to GTO, compared with the payload of 4,000-6,000 kg for the H-IIA, a predecessor design. Its performance to LEO is sufficient for the 16,500 kg HTV. The first H-IIB was launched in September 2009.
Which function is supported by [H-IIB]?