Question: Who was the spouse of the president of the Russian republic, at the time of the disintegration of the union whose fall, revealed more information on Canada's military size?

<P0-S0> At the end of the Second World War, Canada possessed the fourth-largest air force and fifth-largest naval surface fleet in the world, as well as the largest volunteer army ever fielded. <P0-S1> Conscription for overseas service was introduced only near the end of the war, and only 2,400 conscripts actually made it into battle. <P0-S2> Originally, Canada was thought to have had the third-largest navy in the world, but with the fall of the Soviet Union, new data based on Japanese and Soviet sources found that to be incorrect. <SEP> <P1-S0> (ukrainian: си́мон васи́льович петлю́ра; may 10, 1879 – may 25, 1926) was a ukrainian politician and journalist. <P1-S1> he became the supreme commander of the ukrainian army and the president of the ukrainian people's republic during ukraine's short-lived sovereignty in 1918–1921, leading ukraine's struggle for independence following the fall of the russian empire in 1917. <SEP> <P2-S0> Raisa Maximovna Gorbacheva ( "Raisa Maksimovna Gorbachyova", , Титаренко; 5 January 1932 – 20 September 1999) was a Russian activist who was the wife of Soviet leader Mikhail Gorbachev. <P2-S1> She raised funds for the preservation of Russian cultural heritage, fostering of new talent, and treatment programs for children's blood cancer. <SEP> <P3-S0> comet c/2010 x1 (elenin) is an oort cloud comet discovered by russian amateur astronomer leonid elenin on december 10, 2010, through remote control of the international scientific optical network's robotic observatory near mayhill in the u.s. state of new mexico. <P3-S1> the discovery was made using the automated asteroids discovery program colitec. <P3-S2> at the time of discovery, the comet had an apparent magnitude of 19.5, making it about 150,000 times fainter than can be seen with the naked eye. <P3-S3> the discoverer, leonid elenin, originally estimated that the comet nucleus was 3–4 km in diameter, but more recent estimates place the pre-breakup size of the comet at 2 km. <P3-S4> comet elenin started disintegrating in august 2011, and as of mid-october 2011 was not visible even using large ground-based telescopes. <SEP> <P4-S0> The dissolution of the Soviet Union occurred on December 26, 1991, officially granting self - governing independence to the Republics of the Soviet Union. <P4-S1> On the previous day, 25 December 1991, Soviet President Mikhail Gorbachev, the eighth and final leader of the Soviet Union, resigned, declared his office extinct, and handed over its powers -- including control of the Soviet nuclear missile launching codes -- to Russian President Boris Yeltsin. <P4-S2> It was a result of the declaration number 142 - Н of the Supreme Soviet of the Soviet Union. <P4-S3> The declaration acknowledged the independence of the former Soviet republics and created the Commonwealth of Independent States (CIS), although five of the signatories ratified it much later or did not do so at all. <P4-S4> That evening at 7: 32 p.m., the Soviet flag was lowered from the Kremlin for the last time and replaced with the pre-revolutionary Russian flag.