Problem: In 1571 the Crimean Khan burned Moscow. He tried again the next year and was defeated. Another large raid failed in 1591. The raiding area may have moved slightly south and east. Attacks east of Ryazan are mentioned more frequently. After 1585 forts were built far to the south to block the Muravsky Trail, but these had no visible effect in this period. Raids on Poland are mentioned under 1577, 1584 and 1595.
Answer this question based on the article: How many years after 1571 did another large raid fail?
A: 20

Problem: During Stalins Great Purge in the late-1930s, which had not ended by the time of the German invasion on 22 June 1941, much of the officer corps of the Red Army was executed or imprisoned and their replacements, appointed by Stalin for political reasons, often lacked military competence. Of the five Marshal of the Soviet Union appointed in 1935, only Kliment Voroshilov and Semyon Budyonny survived Stalins purge. Tukhachevsky was killed in 1937. Fifteen of 16 army commanders, 50 of the 57 corps commanders, 154 of the 186 divisional commanders, and 401 of 456 colonels were killed, and many other officers were dismissed. In total, about 30,000 Red Army personnel were executed. Stalin further underscored his control by reasserting the role of political commissars at the divisional level and below to oversee the political loyalty of the army to the regime. The commissars held a position equal to that of the commander of the unit they were overseeing. But in spite of efforts to ensure the political subservience of the armed forces, in the wake of Red Armys poor performance Soviet invasion of Poland and in the Winter War, about 80 percent of the officers dismissed during the Great Purge were reinstated by 1941. Also, between January 1939 and May 1941, 161 new divisions were activated. Therefore, although about 75 percent of all the officers had been in their position for less than one year at the start of the German invasion of 1941, many of the short tenures can be attributed not only to the purge, but also to the rapid increase in creation of military units.
Answer this question based on the article: How many of the 57 corp commanders were not killed?
A: 7

Problem: With the emergence of QB Tony Romo in their road victory over the Panthers, the Cowboys flew to FedExField for a rematch with the Washington Redskins. In the first quarter, Dallas trailed early as Redskins MLB Lemar Marshall tackled RB Julius Jones in the endzone for a safety and kicker Nick Novak kicked a 28-yard field goal. In the second quarter, the Cowboys started to fight back, as Romo completed a 10-yard TD pass to WR Terry Glenn (with a failed two-point conversion) and kicker Mike Vanderjagt kicked a 33-yard field goal. The 'Skins would retaliate as RB Clinton Portis ran 38 yards for a touchdown, yet Vanderjagt would allow Dallas to tie at halftime on a 30-yard field goal. In the third quarter, the Cowboys increased their lead with Romo completing a 4-yard TD pass to WR Terrell Owens, who would do a "sleeping celebration." afterwards. He would get flagged for excessive celebration. The "sleeping celebration" referenced Owens' admission earlier in the week that he has trouble staying awake during team meetings. In the fourth quarter, Washington fought back with QB Mark Brunell completing an 18-yard TD pass to TE Chris Cooley. Afterwards, the Redskins would block a 35-yard field goal try by Vanderjagt, which would get picked up by Sean Taylor and returned it 30 yards before getting tackled. Even though time ran out, the Redskins would get one chance to win, due to a face mask infraction penalty on Guard Kyle Kosier. Washington took advantage, as Novak kicked the game-winning 47-yard field goal to drop Dallas to 4-4. Stats
Answer this question based on the article: How many field goals did Vanderjagt get in the fourth quarter?
A:
1