You will be given a definition of a task first, then an example. Follow the example to solve a new instance of the task.
In this task, you are given a question and a context passage. You have to answer the question based on the given passage.

what is the first event mentioned?, Context: The Russian Revolution is the series of revolutions in Russia in 1917, which destroyed the Tsarist autocracy and led to the creation of the Soviet Union. Following the abdication of Nicholas II of Russia, the Russian Provisional Government was established. In October 1917, a red faction revolution occurred in which the Red Guard, armed groups of workers and deserting soldiers directed by the Bolshevik Party, seized control of Saint Petersburg (then known as Petrograd) and began an immediate armed takeover of cities and villages throughout the former Russian Empire.
Solution: Russian Revolution
Why? This is a good example, and the Russian Revolution is the first event mentioned.

New input: what did the the stadium experience during its first season?, Context: Concerns were raised over whether Levi's Stadium's field was of a high enough quality to host a Super Bowl; during the inaugural season, the field had to be re-sodded multiple times due to various issues, and during a week 6 game earlier in the 2015 season, a portion of the turf collapsed under Baltimore Ravens kicker Justin Tucker, causing him to slip and miss a field goal, although the field has not had any major issues since. As is customary for Super Bowl games played at natural grass stadiums, the NFL re-sodded the field with a new playing surface; a hybrid Bermuda 419 turf. NFL and Atlanta Braves field director Ed Mangan stated that the field was in "great shape" for gameday. However, the turf showed problem throughout the game, with a number of players needing to change their cleats during the game and player slipping during plays all throughout the game.
Solution:
issues