Input: Article: The New Haven Division buses follow routes that had originally been covered by trolley service. Horse-drawn steetcars began operating in New Haven in the 1860s, and by the mid-1890s all the lines had become electric. In the 1920s and 1930s, some of the trolley lines began to be replaced by bus lines, with the last trolley route converted to bus in 1948. The City of New Haven is in the very early stages of considering the restoration of streetcar (light-rail) service, which has been absent since the postwar period.

Now answer this question: In what year was the final trolley route in New Haven converted to a bus line?

Output: 1948

Input: Article: On 7 May 2010, May and Taylor announced that they were quitting their record label, EMI, after almost 40 years. On 20 August 2010, Queen's manager Jim Beach put out a Newsletter stating that the band had signed a new contract with Universal Music. During an interview for Hardtalk on the BBC on 22 September, May confirmed that the band's new deal was with Island Records, a subsidiary of Universal Music Group. For the first time since the late 1980s, Queen's catalogue will have the same distributor worldwide, as their current North American labelHollywood Recordsis currently distributed by Universal (for a time in the late 1980s, Queen was on EMI-owned Capitol Records in the US).

Now answer this question: What record label did May and Taylor leave in 2010?

Output: EMI

Input: Article: Electrolytic capacitors use an aluminum or tantalum plate with an oxide dielectric layer. The second electrode is a liquid electrolyte, connected to the circuit by another foil plate. Electrolytic capacitors offer very high capacitance but suffer from poor tolerances, high instability, gradual loss of capacitance especially when subjected to heat, and high leakage current. Poor quality capacitors may leak electrolyte, which is harmful to printed circuit boards. The conductivity of the electrolyte drops at low temperatures, which increases equivalent series resistance. While widely used for power-supply conditioning, poor high-frequency characteristics make them unsuitable for many applications. Electrolytic capacitors will self-degrade if unused for a period (around a year), and when full power is applied may short circuit, permanently damaging the capacitor and usually blowing a fuse or causing failure of rectifier diodes (for instance, in older equipment, arcing in rectifier tubes). They can be restored before use (and damage) by gradually applying the operating voltage, often done on antique vacuum tube equipment over a period of 30 minutes by using a variable transformer to supply AC power. Unfortunately, the use of this technique may be less satisfactory for some solid state equipment, which may be damaged by operation below its normal power range, requiring that the power supply first be isolated from the consuming circuits. Such remedies may not be applicable to modern high-frequency power supplies as these produce full output voltage even with reduced input.

Now answer this question: How can electrolytic capacitors be safely used after having been stored unused for a long time?

Output:
by gradually applying the operating voltage