Context and question: The Institute also maintains a dozen regional offices around the United Kingdom, it opened its first regional office for the East of England at Cambridge in 1966.
How many satellite offices does the Royal Institute run in the UK?
Answer: a dozen
Context and question: On April 15, 2013, two Chechen Islamist brothers exploded two bombs near the finish line of the Boston Marathon, killing three people and injuring roughly 264.
How many fatalities were there at the marathon?
Answer: three
Context and question: Motors have very little room for electrical insulation so they generally have low voltage ratings. Because transformers (prior to the development of power electronics) cannot step down DC voltages, trains were supplied with a relatively low DC voltage that the motors can use directly. The most common DC voltages are listed in the previous section. Third (and fourth) rail systems almost always use voltages below 1 kV for safety reasons while overhead wires usually use higher voltages for efficiency. ("Low" voltage is relative; even 600 V can be instantly lethal when touched.)
Is "low" voltage used by trains safe for people?
Answer:
lethal