P: Trying to snap a two-game skid, the Texans flew to Qualcomm Stadium for a Week 8 intraconference game against the San Diego Chargers. In the first quarter, Houston's recent struggles continued as Chargers QB Philip Rivers completed a 49-yard TD pass to TE Antonio Gates. Later, a goof-up on special teams led to more points as a high punt snap went into the end zone. Punter Matt Turk was unable to fall on the ball and San Diego CB Antonio Cromartie managed to recover it for a touchdown. In the second quarter, the Texans got on the board with kicker Kris Brown nailing a 40-yard field goal. However, the Chargers continued their beatdown with Rivers and Gates hooking up again on a 31-yard TD pass. Later, San Diego increased its lead with Cromartie returning an interception 70 yards for a touchdown, along with Rivers completing a 14-yard TD pass to WR Chris Chambers. After a scoreless third quarter, Houston tried to come back, as QB Sage Rosenfels completed a 28-yard TD to TE Joel Dreessen in the fourth quarter. That was as close to the Chargers as they got. Starting QB Matt Schaub (11/18 for 77 yards and 2 interceptions) left the game in the second quarter with a concussion, after getting a late hit from San Diego CB Drayton Florence.
Answer this: How many more touchdowns did Rivers throw than Rosenfels?

A: 2

P: In August 2015, Czech GDP growth was 4.4%, making the Czech economy the highest growing in Europe. On 9 November 2015, unemployment in the Czech Republic was at 5.9%, the lowest number since February 2009. In September 2016, the unemployment was at 4.0%. In 2016, for first time since 1995, Czech Republic had budget surplus 61 billion CZK. In the year ending by Summer 2017, the Czech GDP grew by 4.7%, the third fastest in Europe, and unemployment was at 3% or 4% in the European or national conventions, by far the lowest rate in Europe. Dividends worth CZK 289 billion were paid to the foreign owners of Czech companies in 2016.
Answer this: How many percents less was unemployment rate in 2016 then 2015?

A: 1.9

P: Constantinople had been an imperial capital since its consecration in 330 under Roman Emperor, Constantine the Great. In the following eleven centuries, the city had been besieged many times but was captured only once: during the Fourth Crusade in 1204.:304 The crusaders established an unstable Latin state in and around Constantinople while the remaining empire splintered into a number of Byzantine successor states, notably Nicaea, Epirus and Trebizond. They fought as allies against the Latin establishments, but also fought among themselves for the Byzantine throne. The Nicaeans eventually reconquered Constantinople from the Latins in 1261. Thereafter, there was little peace for the much-weakened empire as it fended off successive attacks by the Latins, the Serbians, the Bulgarians, and, most importantly, the Ottoman Turks. The Black Plague between 1346 and 1349 killed almost half of the inhabitants of Constantinople. The city was severely depopulated due to the general economic and territorial decline of the empire, and by 1453 consisted of a series of walled villages separated by vast fields encircled by the fifth-century Theodosian walls. By 1450 the empire was exhausted and had shrunk to a few square miles outside the city of Constantinople itself, the Princes' Islands in the Sea of Marmara, and the Peloponnese with its cultural center at Mystras. The Empire of Trebizond, an independent successor state that formed in the aftermath of the Fourth Crusade, also survived on the coast of the Black Sea.
Answer this: How many different nations did the empire have to fight off?

A:
4