user: Student A:Passage: A standard-gauge railway is a railway with a track gauge of 1,435 mm (4 ft 8 ⁄ in). The standard gauge is also called Stephenson gauge after George Stephenson, International gauge, UIC gauge, uniform gauge, normal gauge and European gauge in the EU and Russia. It is the most widely used railway track gauge across the world with approximately 55 % of the lines in the world using it. All high-speed rail lines, except those in Russia, Finland, Portugal and Uzbekistan, use standard gauge. The distance between the inside edges of the rails is defined to be 1435 mm except in the United States, where it is still defined in Imperial and US customary units as approximately 4 ft ​ 8 ⁄ in.

Question: Based on this passage, what is the standard width of train tracks?
Student B:OK... To answer the above question, the relevant sentence is: A standard-gauge railway is a railway with a track gauge of 1,435 mm (4 ft 8 ⁄ in).
1,435 mm ( 4 ft 8 ⁄ in ).

Student A:Context: Each half-inning formally starts when the umpire calls "Play" or "Play ball". A full inning consists of six outs, three for each team; and, in Major League Baseball and most other adult leagues, a regulation game consists of nine innings. The visiting team bats in the first half-inning, the top of the inning, derived from the position of the visiting team at the top line of a baseball line score. The home team's half of an inning is the bottom of the inning, and the break between halves of an inning is the middle of the inning. If the home team is leading in the middle of the final scheduled inning, or scores to take the lead in the bottom of the final scheduled inning, the game immediately ends in a home victory.

Question: who bats in the top of the inning?
Student B:OK... To answer the question, consider the following: The visiting team bats in the first half-inning, the top of the inning, derived from the position of the visiting team at the top line of a baseball line score.
The visiting team.

Student A:Pearl Harbor is a lagoon harbor on the island of Oahu, Hawaii, west of Honolulu. It has been long visited by the Naval fleet of the United States, before it was acquired from the Hawaiian Kingdom by the U.S. with the signing of the Reciprocity Treaty of 1875. Much of the harbor and surrounding lands is now a United States Navy deep-water naval base. It is also the headquarters of the United States Pacific Fleet. The U.S. government first obtained exclusive use of the inlet and the right to maintain a repair and coaling station for ships here in 1887. The attack on Pearl Harbor by the Empire of Japan on December 7, 1941, was the immediate cause of the United States' entry into World War II.

Where is pearl harbour located on a map?
Student B:OK... To answer this question, we should know that: Pearl Harbor is a lagoon harbor on the island of Oahu, Hawaii, west of Honolulu.
on the island of Oahu , Hawaii , west of Honolulu.

Student A:"Mind Your Own Business" is a 1949 song written and originally performed by Hank Williams.

Based on this passage, who sang the song mind your own business?
Student B:

assistant: OK... The relevant information to answer the above question is: "Mind Your Own Business" is a 1949 song written and originally performed by Hank Williams.
Hank Williams.