Given the task definition, example input & output, solve the new input case.
In this task, you are given a question and a context passage. You have to answer the question based on the given passage.
Example: 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.
Output: Russian Revolution
This is a good example, and the Russian Revolution is the first event mentioned.

New input case for you: How was the time period described in which the Cubs song was very popular?, Context: During the summer of 1969, a Chicago studio group produced a single record called "Hey Hey! Holy Mackerel! (The Cubs Song)" whose title and lyrics incorporated the catch-phrases of the respective TV and radio announcers for the Cubs, Jack Brickhouse and Vince Lloyd. Several members of the Cubs recorded an album called Cub Power which contained a cover of the song. The song received a good deal of local airplay that summer, associating it very strongly with that bittersweet season. It was played much less frequently thereafter, although it remained an unofficial Cubs theme song for some years after.
Output:
summer