Question: "What level of detailed were the plans?" Context: "The city's planned design included specific areas for almost everything, including accommodation, Hotels Sectors North and South. New hotel facilities are being developed elsewhere, such as the hotels and tourism Sector North, located on the shores of Lake Paranoa. Brasilia has a range of tourist accommodation from inns, pensions and hostels to larger international chain hotels. The city's restaurants cater to a wide range of foods from local and regional Brazilian dishes to international cuisine." Answer:
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Answer: specific

Question: "Which weighs more, air or a human?" Context: "A solar balloon is a black balloon that is filled with ordinary air. As sunlight shines on the balloon, the air inside is heated and expands causing an upward buoyancy force, much like an artificially heated hot air balloon. Some solar balloons are large enough for human flight, but usage is generally limited to the toy market as the surface-area to payload-weight ratio is relatively high." Answer:
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Answer: human

Question: "Power factor problems are a drawback with its' use?" Context: "There has, however, been interest among railroad operators in returning to DC use at higher voltages than previously used. At the same voltage, DC often has less loss than AC, and for this reason high-voltage direct current is already used on some bulk power transmission lines. DC avoids the electromagnetic radiation inherent with AC, and on a railway this also reduces interference with signalling and communications and mitigates hypothetical EMF risks. DC also avoids the power factor problems of AC. Of particular interest to railroading is that DC can supply constant power with a single ungrounded wire. Constant power with AC requires three-phase transmission with at least two ungrounded wires. Another important consideration is that mains-frequency 3-phase AC must be carefully planned to avoid unbalanced phase loads. Parts of the system are supplied from different phases on the assumption that the total loads of the 3 phases will even out. At the phase break points between regions supplied from different phases, long insulated supply breaks are required to avoid them being shorted by rolling stock using more than one pantograph at a time. A few railroads have tried 3-phase but its substantial complexity has made single-phase standard practice despite the interruption in power flow that occurs twice every cycle. An experimental 6 kV DC railway was built in the Soviet Union." Answer:
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Answer:
AC