Given a question and a context passage, generate the answer having the word or phrase from the context passage. Here, the answer should be a shortest continous span from the passage.

Example Input: Context: Pat came over from Ireland to England with his wife one year ago to find work. He got quite a good job with a building company, and as he did not drink or smoke, he saved up quite a lot of money. His wife's parents were still in Ireland, and one day she got a telegram saying that her mother was ill, so Pat gave her some money and she went to Ireland to see her mother. After a week, Pat wanted to write a letter to her, but he could not read or write very well, so he went to his priest and asked him to do it for him. Pat told the priest what he wanted to say, and the priest wrote it down. After a few minutes Pat stopped, and the priest said," Do you want to say more?" "Only ," 'Please excuse the bad writing and spelling'," Pat said. 
 Question: Who really made a mistake in the story?
Example Output: pat.

Example Input: Context: In 1904, the city of Lillehammer set aside an area already known as Maihaugen and bought Sandvig's collection and established Sandvigske Samlinger (Sandvig Collections), the formal name for Maihaugen. 
 Question: When was Maihaugen started?
Example Output: 1904

Example Input: Context: Like water and carbon, nitrogen is also repeatedly recycled through the biosphere. This process is called the nitrogen cycle. Nitrogen is one of the most common elements in living organisms. It is important for creating both proteins and nucleic acids, like DNA. The air that we breathe is mostly nitrogen gas (N2 ), but, unfortunately, animals and plants cannot use the nitrogen when it is a gas. In fact, plants often die from a lack of nitrogen even through they are surrounded by plenty of nitrogen gas. Nitrogen gas (N2 ) has two nitrogen atoms connected by a very strong triple bond. Most plants and animals cannot use the nitrogen in nitrogen gas because they cannot break that triple bond. In order for plants to make use of nitrogen, it must be transformed into molecules they can use. This can be accomplished several different ways ( Figure 1.1). Lightning: When lightening strikes, nitrogen gas is transformed into nitrate (NO3 ) that plants can use. Nitrogen fixation: Special nitrogen-fixing bacteria can also transform nitrogen gas into useful forms. These bacteria live in the roots of plants in the pea family. They turn the nitrogen gas into ammonium (NH4 + ) (a process called ammonification). In water environments, bacteria in the water can also fix nitrogen gas into ammonium. Ammonium can be used by aquatic plants as a source of nitrogen. Nitrogen also is released to the environment by decaying organisms or decaying wastes. These wastes release nitrogen in the form of ammonium. Ammonium in the soil can be turned into nitrate by a two-step process completed by two different types of bacteria. In the form of nitrate, nitrogen can be used by plants through the process of assimilation. It is then passed along to animals when they eat the plants. Turning nitrate back into nitrogen gas, the process of denitrification, happens through the work of denitrifying bacteria. These bacteria often live in swamps and lakes. They take in the nitrate and release it back to the atmosphere as nitrogen gas. Just like the carbon cycle, human activities impact the nitrogen cycle. These human activities include the burning of fossil fuels, which release nitrogen oxide gasses into the atmosphere. Releasing nitrogen oxide back into the atmosphere leads to problems like acid rain. 
 Question: nitrogen gas is two nitrogen atoms held together by
Example Output:
a very strong triple bond.