question: By 1474, cannons had been introduced in Mdina. Other extensive preparations for an attack were made in the 1480s, when the fortifications were once again improved under the direction of Sicilian military engineers. At this point, some buildings in Rabat were demolished to clear the fortifications' line of fire. By 1522, the fortifications were being modernized with the construction of embrasures. However, the walls were still regarded as obsolete, since they lacked bastions and could not resist bombardment from modern artillery. Most of the medieval walls of Mdina were gradually dismantled between the 1530s and 1720s, when the city's fortifications were being upgraded by the Hospitallers. One of the most significant visible remnants of the medieval fortifications is the Greeks Gate and the surrounding curtain walls, which still retains its medieval form apart from the outer portal which was built in the 18th century. Parts of the double walls, including the remains of two gun loops, still stand between the gate and the Torre dello Standardo. Most of the northern and eastern walls date back to the medieval period, although some sections were rebuilt by the Hospitallers. The northern ramparts contain a medieval wall tower, while the remains of Byzantine antemurals and the foundations of a late 15th-century artillery platform have been found in the eastern walls.
Answer this question: How many decades passed while the medival walls of Mdina were being dismantled?
answer: 19

question: Coming off their season-sweeping road win over the Ravens, the Browns went home for a Week 12 duel with the Houston Texans. In the first quarter, Cleveland trailed early as Texans QB Matt Schaub completed a 17-yard TD pass to WR Kevin Walter for the only score of the period. In the second quarter, the Browns answered with QB Derek Anderson completing a 19-yard TD pass to WR Braylon Edwards. However, Houston would retake the lead as kicker Kris Brown managed to get a 41-yard field goal. Fortunately, Cleveland regained the lead with Anderson completing a 7-yard TD pass to TE Kellen Winslow. In the third quarter, the Browns added onto their lead as kicker Phil Dawson getting a 25-yard field goal for the only score of the period. In the fourth quarter, Cleveland pulled away with Dawson nailing a 27-yard field goal, along with RB Jamal Lewis getting a 1-yard TD run. The Texans' only response would be Schaub's 6-yard TD pass to TE Owen Daniels. With the win, the Browns improved to 7-4. This would also be the first time since 1994 that Cleveland had won five-straight home games. For Braylon Edwards (4 receptions for 57yards and 1 touchdown), who had 11 touchdown receptions on the year after this game, it would be the most by a Browns receiver since Gary Collins had 11 in 1963. For Derek Anderson (24/35 for 253yards with 2 touchdowns and 1 interception), his 22 touchdown passes (up to this point in the year) is the best by a Browns quarterback since Bernie Kosar had 22 in 1987. For the month of November, Josh Cribbs was named the AFC Special Teams Player of the Month (for the second time in the season), due in large to his spectacular returns in the Pittsburgh game. Additionally, Joe Thomas was named the AFC Offensive Rookie of the Month for his continuing improvement anchoring Cleveland's offensive line, as evidenced by the increased production of Jamal Lewis and the rarity of Derek Anderson being sacked.
Answer this question: How many total points were scored in the third quarter?
answer: 3

question: After a tough loss to the Bears, the Colts returned home to take on the Vikings. The Vikes took the lead as Blair Walsh nailed a field goal from 51 yards out for a score of 3-0. However, the Colts made it 7-3 with Andrew Luck's 3-yard touchdown pass to Dwayne Allen. The Vikings came within a point as Blair Walsh kicked a 29-yard field goal for a 7-6 score. However, the Colts moved further ahead as Vinatieri scored a 26-yard field goal, followed by Andrew Luck's 30-yard touchdown pass to Reggie Wayne for leads of 10-6 and then 17-6 at halftime. In the 3rd quarter, the Colts increased their lead when Vinatieri scored a 45-yard field goal to make the score 20-6. However, in the fourth quarter the Vikings were able to score 2 straight touchdowns with Christian Ponder's 7-yard pass to Stephen Burton to make the score 20-13 and then a 6-yard pass to Kyle Rudolph to tie the game at 20-20. With 8 seconds left, the Colts drove down the field and wrapped the game up with Vinatieri 53-yard field goal for a final score of 23-20. With the win, the Colts improved to 1-1 and remain undefeated at home against the Vikings as a franchise.
Answer this question: How many points were the Colts leading by at halftime?
answer:
11