Ans: H1N1 influenza virus
Ques: The 1918 flu pandemic (January 1918 -- December 1920) was an unusually deadly influenza pandemic, the first of the two pandemics involving H1N1 influenza virus. It infected 500 million people around the world, including people on remote Pacific islands and in the Arctic, and resulted in the deaths of 50 to 100 million (three to five percent of the world's population), making it one of the deadliest natural disasters in human history.

Flu that spread over a large area in 1918?
CoT: To answer this question, we should know that: The 1918 flu pandemic (January 1918 -- December 1920) was an unusually deadly influenza pandemic, the first of the two pandemics involving H1N1 influenza virus.

Ans: the first nuclear weapons
Ques: Context: The Manhattan Project was a research and development undertaking during World War II that produced the first nuclear weapons. It was led by the United States with the support of the United Kingdom and Canada. From 1942 to 1946, the project was under the direction of Major General Leslie Groves of the U.S. Army Corps of Engineers. Nuclear physicist Robert Oppenheimer was the director of the Los Alamos Laboratory that designed the actual bombs. The Army component of the project was designated the Manhattan District; Manhattan gradually superseded the official codename, Development of Substitute Materials, for the entire project. Along the way, the project absorbed its earlier British counterpart, Tube Alloys. The Manhattan Project began modestly in 1939, but grew to employ more than 130,000 people and cost nearly US $2 billion (about $22 billion in 2016 dollars). Over 90 % of the cost was for building factories and to produce fissile material, with less than 10 % for development and production of the weapons. Research and production took place at more than 30 sites across the United States, the United Kingdom, and Canada.

Question: the u.s. manhattan project of 1945 was responsible for developing?
CoT: To answer the question, consider the following: The Manhattan Project was a research and development undertaking during World War II that produced the first nuclear weapons.

Ans: `` Mr. President '' ( m . ) or Madam President ( f . )
Ques: The title "Mr. President" (m.) or Madam President (f.) may apply to a person holding the title of president, or presiding over certain other governmental bodies.

Answer this question: what is the official title of the president of the united states?
CoT: To answer the above question, the relevant sentence is: The title "Mr. President" (m.) or Madam President (f.) may apply to a person holding the title of president, or presiding over certain other governmental bodies.

Ans: One of the Vivek Express trains , the one from Dibrugarh to Kanyakumari

Ques: Vivek Express is a chain of express trains on the Indian Railways network. These trains were announced in the Railway Budget of 2011-12 by the then Railway Minister. These trains were started to commemorate the 150th birth anniversary of Swami Vivekananda, to be held in 2013. One of the Vivek Express trains, the one from Dibrugarh to Kanyakumari; is the longest route on the Indian Railways network, in terms of distance and time, and is the 9th longest in the world.

Answer this question: which is the longest running train in india?
CoT: The important part for answering this question is: One of the Vivek Express trains, the one from Dibrugarh to Kanyakumari; is the longest route on the Indian Railways network, in terms of distance and time, and is the 9th longest in the world.