In this task, you are given a question and a context passage. You have to answer the question based on the given passage.

Q: Waves contain?, Context: As an electro-magnetic wave travels through the different parts of the antenna system (radio, feed line, antenna, free space) it may encounter differences in impedance (E/H, V/I, etc.). At each interface, depending on the impedance match, some fraction of the wave's energy will reflect back to the source, forming a standing wave in the feed line. The ratio of maximum power to minimum power in the wave can be measured and is called the standing wave ratio (SWR). A SWR of 1:1 is ideal. A SWR of 1.5:1 is considered to be marginally acceptable in low power applications where power loss is more critical, although an SWR as high as 6:1 may still be usable with the right equipment. Minimizing impedance differences at each interface (impedance matching) will reduce SWR and maximize power transfer through each part of the antenna system.

A: power
****
Q: Were more soldiers or vehicles evacuated to Pusan?, Context: During the Hungnam evacuation, about 193 shiploads of UN Command forces and matériel (approximately 105,000 soldiers, 98,000 civilians, 17,500 vehicles, and 350,000 tons of supplies) were evacuated to Pusan. The SS Meredith Victory was noted for evacuating 14,000 refugees, the largest rescue operation by a single ship, even though it was designed to hold 12 passengers. Before escaping, the UN Command forces razed most of Hungnam city, especially the port facilities; and on 16 December 1950, President Truman declared a national emergency with Presidential Proclamation No. 2914, 3 C.F.R. 99 (1953), which remained in force until 14 September 1978.[b] The next day (17 December 1950) Kim Il-sung was deprived of the right of command of KPA by China. After that, the leading part of the war became the Chinese army. Following that, on 1 February 1951, United Nations General Assembly adopted a draft resolution condemning China as an aggressor in the Korean War.

A: soldiers
****
Q: What would be done for people who need more information?, Context: Following guidelines set in the National Cycling strategy, Newcastle first developed its cycling strategy in 1998. As of 2012, the local council social aims and objectives for cycling include: highlighting the usage of cycling to cut city congestion; educating that cycling promotes healthy living… The authority also has infrastructure aims and objectives which include: developing on road cycle networks on quieter streets; making safer routes on busier streets; innovating and implementing contraflows on one way streets; developing the existing off road cycle route networks and improve signage; joining up routes that are partially or completely isolated; Increase the number of cycle parking facilities; working with employers to integrate cycling into workplace travel plans; link the local networks to national networks.

A:
link the local networks to national networks
****