Input: Read this: Pascal Lissouba, who became Congo's first elected president (19921997) during the period of multi-party democracy, attempted to implement economic reforms with IMF backing to liberalise the economy. In June 1996 the IMF approved a three-year SDR69.5m (US$100m) enhanced structural adjustment facility (ESAF) and was on the verge of announcing a renewed annual agreement when civil war broke out in Congo in mid-1997.
Question: Who was Congo's last elected president?

Output: unanswerable

Input: Read this: In February 1939, he received news from his sisters that his mother was dying. On 10 February 1939, Pope Pius XI died. Roncalli was unable to see his mother for the end as the death of a pontiff meant that he would have to stay at his post until the election of a new pontiff. Unfortunately, she died on 20 February 1939, during the nine days of mourning for the late Pius XI. He was sent a letter by Cardinal Eugenio Pacelli, and Roncalli later recalled that it was probably the last letter Pacelli sent until his election as Pope Pius XII on 2 March 1939. Roncalli expressed happiness that Pacelli was elected, and, on radio, listened to the coronation of the new pontiff.
Question: How did Pope Pius XI keep track of the election of the new Pope?

Output: unanswerable

Input: Read this: In 1989, the first ISPs were established in Australia and the United States. In Brookline, Massachusetts, The World became the first commercial ISP in the US. Its first customer was served in November 1989.
Question: What was established in Boston Massachusetts?

Output: unanswerable

Input: Read this: The Sumerians were one of the first known beer drinking societies. Cereals were plentiful and were the key ingredient in their early brew. They brewed multiple kinds of beer consisting of wheat, barley, and mixed grain beers. Beer brewing was very important to the Sumerians. It was referenced in the Epic of Gilgamesh when Enkidu was introduced to the food and beer of Gilgamesh's people: "Drink the beer, as is the custom of the land... He drank the beer-seven jugs! and became expansive and sang with joy!"
Question: What kinds of beer did the Sumerians brew?

Output:
wheat, barley, and mixed grain