Background: Nikolai Ivanovich Yezhov, IPA: [njIka'laj jI'zof]; May 1, 1895 - February 4, 1940) was a Soviet secret police official under Joseph Stalin who was head of the NKVD from 1936 to 1938, during the most active period of the Great Purge. Having presided over mass arrests and executions during the Great Purge, Yezhov fell from Stalin's favour and power. He was arrested, confessed to a range of anti-Soviet activity, later claimed he was tortured into making the confessions, and was executed in 1940.
Context: Yezhov was appointed People's Commissar for Water Transport on April 6, 1938. Though he retained his other posts, his role as grand inquisitor and extractor of confessions gradually diminished as Stalin retreated from the worst excesses of the Great Purge.  By saddling him with the extra job, Stalin killed two birds with one stone: Yezhov could correct the water transportation situation with tough Chekist methods, and his transfer to the terra incognita of economic tasks would leave him less time for the NKVD and weaken his position there, thus creating the possibility that in due course he could be removed from the leadership of the punitive apparatus and replaced by fresh people.  Contrary to Stalin's expectations, the vast number of party officials and military officers lost during Yezhov's purges had been only partially made good by replacement with trusted Stalinist functionaries, and he eventually recognized that the disruption was severely affecting the country's ability to coordinate industrial production and defend its borders from the growing threat of Nazi Germany. Yezhov had accomplished Stalin's intended task for the Great Purge: the public liquidation of the last of his Old Bolshevik political rivals and the elimination of any possibility of "disloyal elements" or "fifth columnists" within the Soviet military and government prior to the onset of war with Germany. From Stalin's perspective, Yezhov (like Yagoda) had served his purpose but had seen too much and wielded too much power to be allowed to live. The defection to Japan of the Far Eastern NKVD chief, Genrikh Lyushkov on June 13, 1938, rightly worried Yezhov, who had protected Lyushkov from the purges and feared he would be blamed.
Question: how old was he when he fell from power?
Answer: June 13, 1938, rightly worried Yezhov, who had protected Lyushkov from the purges and feared he would be blamed.

Problem: Background: D.O.A. is a Canadian punk rock band from Vancouver, British Columbia. They are often referred to as the "founders" of hardcore punk along with Black Flag, Bad Brains, Angry Samoans, the Germs, Negative Trend, and Middle Class. Their second album Hardcore '81 was thought by many to have been the first actual reference to the second wave of the American punk sound as hardcore. Singer/guitarist Joey "Shithead" Keithley is the only founding member to have stayed in the band throughout its entire history, with original bassist Randy Rampage returning to the band twice after his original departure.
Context: On April 22, 1981 the band released their second album Hardcore '81; the record's title and its extensive North American promotional tour is sometimes credited with popularizing the term "hardcore punk".  Randy Rampage was fired from the band on January 1, 1982 and was replaced by ex-Skulls drummer Dimwit on bass. After a short tour of California, Chuck Biscuits left the band and joined Black Flag. Dimwit switched back to drums and Subhumans singer Wimpy Roy was hired as the new bass player and second singer, leaving Keithley as the only remaining original member. This lineup would last from 1982-1983 and later 1985-1986 and produced several notable releases, including the EP War on 45 (now expanded into a full-length album). War on 45 found the band expanding their sound with touches of funk and reggae, as well as making their anti-war and anti-imperialist political stance more clear.  1985's Let's Wreck The Party and 1987's True (North) Strong And Free saw the band taking on a more mainstream, hard-rock oriented production, but without watering down the band's political lyrical focus. Meanwhile, the band's lineup changes continued after Let's Wreck the Party, with Dimwit replaced by Kerr Belliveau. Belliveau stayed only three weeks with the band but recorded the Expo Hurts Everyone 7" as well as two songs for True (North) Strong and Free before being replaced by Jon Card from Personality Crisis. Dave Gregg quit in 1988 after D.O.A. fired their manager Ken Lester, to which he was very close. The band hired Chris Prohom from the Dayglo Abortions as a replacement.
Question: What was Hardcore 81?
Answer:
On April 22, 1981 the band released their second album Hardcore '81;