P: At the beginning of the period the Time of Troubles disorganized the frontier defenses and led to much destruction. The Oka region was raided almost every year, but with decreasing frequency. 1633 may have been the last crossing of the Oka. We hear more frequently of raids at such places as Kursk and Voronezh, implying stronger defense in the north and a southern movement of the Russian population. The Belgorod Line of forts was begun about 1633 and seems to have had noticeable effects after about 1640. We hear of raids on Poland in 1614-21, 1624-28, 1633, 1640 and 1642.
Answer this: How many raids did Poland have?

A: 5

P: The Bengals started the season at home against the Ravens. In the first quarter, the Ravens scored as Justin Tucker kicked a 25-yard field goal to make it 3-0. They would increase their lead in the second quarter when Joe Flacco found Jeremy Maclin on a 48-yard pass to make it 10-0. This would be followed up by a 2-yard touchdown run by Terrence West to make the score 17-0 at halftime. In the third quarter, the Ravens would go back to work with Tucker kicking yet another 25-yard field goal to make the score 20-0. A scoreless fourth quarter made this the eventual final score of the game. With the loss, the Bengals started their season 0-1. This is the team's first shut-out loss at home since 2001. Andy Dalton set a new career high for total turnovers in a game with 5 (4 interceptions, 1 lost fumble)
Answer this: How many points did Ravens score after the halftime?

A: 3

P: By July 2007, the Shadow platform accumulated 200,000 flight hours, doubling its previous record of 100,000 hours in 13 months. The system then surpassed 300,000 flight hours in April 2008, and by May 2010, the Shadow system had accumulated over 500,000 flight hours. As of 2011, the Shadow had logged over 709,000 hours. The Shadow platform has flown over 37,000 sorties in support of operations in Iraq and Afghanistan by US Army and Army National Guard units. On 6 August 2012, AAI announced that the Shadow had achieved 750,000 flight hours during more than 173,000 missions. More than 900,000 flight hours had been logged by Shadow UAVs by the end of June 2014.
Answer this: How many years did it take the Shadow to go from 300000 hours to 500000 hours?

A:
2