Input: Alexander Graham Bell
In 1936 the US Patent Office declared Bell first on its list of the country's greatest inventors, leading to the US Post Office issuing a commemorative stamp honoring Bell in 1940 as part of its 'Famous Americans Series'. The First Day of Issue ceremony was held on October 28 in Boston, Massachusetts, the city where Bell spent considerable time on research and working with the deaf. The Bell stamp became very popular and sold out in little time. The stamp became, and remains to this day, the most valuable one of the series.

In which city was the stamp officially released?
Output: Boston

Input: Glacier
A glacier (US /ler/ or UK /lsi/) is a persistent body of dense ice that is constantly moving under its own weight; it forms where the accumulation of snow exceeds its ablation (melting and sublimation) over many years, often centuries. Glaciers slowly deform and flow due to stresses induced by their weight, creating crevasses, seracs, and other distinguishing features. They also abrade rock and debris from their substrate to create landforms such as cirques and moraines. Glaciers form only on land and are distinct from the much thinner sea ice and lake ice that form on the surface of bodies of water.

What causes glaciers to deform and flow?
Output: stresses induced by their weight

Input: Dwight D. Eisenhower
A loblolly pine, known as the "Eisenhower Pine", was located on Augusta's 17th hole, approximately 210 yards (192 m) from the Masters tee. President Dwight D. Eisenhower, an Augusta National member, hit the tree so many times that, at a 1956 club meeting, he proposed that it be cut down. Not wanting to offend the president, the club's chairman, Clifford Roberts, immediately adjourned the meeting rather than reject the request. The tree was removed in February 2014 after an ice storm caused it significant damage.

In what year did Eisenhower propose that the pine tree named after him be removed?
Output: 1956

Input: Roman Republic
Mithridates the Great was the ruler of Pontus, a large kingdom in Asia Minor (modern Turkey), from 120 to 63 BC. Mithridates antagonised Rome by seeking to expand his kingdom, and Rome for her part seemed equally eager for war and the spoils and prestige that it might bring. In 88 BC, Mithridates ordered the killing of a majority of the 80,000 Romans living in his kingdom. The massacre was the official reason given for the commencement of hostilities in the First Mithridatic War. The Roman general Lucius Cornelius Sulla forced Mithridates out of Greece proper, but then had to return to Italy to answer the internal threat posed by his rival, Gaius Marius. A peace was made between Rome and Pontus, but this proved only a temporary lull.

How did the ruler of Pontus anger Rome?
Output:
by seeking to expand his kingdom