Student A:Context: Productivity describes various measures of the efficiency of production. A productivity measure is expressed as the ratio of output to inputs used in a production process, i.e. output per unit of input. Productivity is a crucial factor in production performance of firms and nations. Increasing national productivity can raise living standards because more real income improves people's ability to purchase goods and services, enjoy leisure, improve housing and education and contribute to social and environmental programs. Productivity growth also helps businesses to be more profitable. There are many different definitions of productivity and the choice among them depends on the purpose of the productivity measurement and / or data availability.

Question: by what term do we call the level of output generated by a given volume of inputs?
Student B:OK... The relevant information to answer the above question is: A productivity measure is expressed as the ratio of output to inputs used in a production process, i.e. output per unit of input.
A productivity measure.

Problem:This list of metro systems includes electrified rapid transit train systems worldwide. In some cases, metro systems are referred to as subways, U-Bahns or undergrounds. As of October 2014, 157 cities in 55 countries around the world host the approximately 160 metro systems that are listed here. The London Underground first opened as an "underground railway" in 1863 and its first electrified underground line opened in 1890, making it the world's first metro system. The metro system with the longest route length is the Shanghai Metro; the busiest one is the Beijing Subway; and the one with the most stations is the New York City Subway.

Answer this question: when was first metro train started in world?
Solution:OK... This is the relevant information: The London Underground first opened as an "underground railway" in 1863 and its first electrified underground line opened in 1890, making it the world's first metro system.
1890.

Student A:The Flash is an American action television series developed by Greg Berlanti, Andrew Kreisberg, and Geoff Johns, airing on The CW. It is based on the DC Comics character Barry Allen / Flash, a costumed crimefighter with the power to move at superhuman speeds. It is a spin-off from Arrow, existing in the same fictional universe. The series follows Barry Allen, portrayed by Grant Gustin, a crime scene investigator who gains superhuman speed, which he uses to fight criminals, including others who have also gained superhuman abilities. The Flash was renewed in March 2016 for a third season, which premiered on October 4, 2016. On January 8, 2017, The CW renewed the series for a fourth season, which is scheduled to debut on October 10, 2017. As of May 23, 2017, 69 episodes of The Flash have aired, concluding the third season.

Answer this question based on the passage: when is the next episode of flash going to air?
Student B:OK... The important part for answering this question is: On January 8, 2017, The CW renewed the series for a fourth season, which is scheduled to debut on October 10, 2017.
October 10 , 2017.

Problem:Evening is the period of time at the end of the day, usually from about 6pm to bedtime. It is a daily astronomic event of variable time period between daytime and night, and the period in which the daylight is decreasing, after the afternoon and before night. There is no exact time for when evening begins and ends (equally true with night). Though the term is subjective, evening is typically understood to begin shortly before sunset and during twilight (sunset and twilight vary throughout the year), lasting until night -- typically astronomical sunset. There can be no precise definition in terms of clock time, but it is socially considered to start around 6 pm. and to last until nighttime or bedtime.

Answer this question: what time does afternoon end and evening start?
Solution:OK... The important part for answering this question is: Evening is the period of time at the end of the day, usually from about 6pm to bedtime.
about 6pm.

Student A:Daddy's Home 2 was released on Digital HD on February 6, 2018, and was released on Blu-ray and DVD on February 20, 2018.

Based on this passage, when does daddies home 2 come out on dvd?
Student B:OK... The relevant sentence in the passage is: Daddy's Home 2 was released on Digital HD on February 6, 2018, and was released on Blu-ray and DVD on February 20, 2018.
February 20 , 2018.

Student A:East Durham College, formerly known as East Durham & Houghall Community College, is a community college with campuses in Peterlee and Houghall, south-east of Durham.

Based on this passage, the former peterlee campus of east durham college?
Student B:
OK... To answer the question, consider the following: East Durham College, formerly known as East Durham & Houghall Community College, is a community college with campuses in Peterlee and Houghall, south-east of Durham.
East Durham & Houghall Community College.