Student A:The Blue Marble was not the first clear image taken of an illuminated face of Earth, since similar shots from the ATS-3 satellite had already been made as early as 1967. The Apollo 17 image, however, released during a surge in environmental activism during the 1970s, became a symbol of the environmental movement, as a depiction of Earth's frailty, vulnerability, and isolation amid the vast expanse of space. NASA archivist Mike Gentry has speculated that The Blue Marble is among the most widely distributed images in human history.

Based on this passage, when was the first photo of earth from space taken?
Student B:OK... The relevant sentence in the passage is: The Blue Marble was not the first clear image taken of an illuminated face of Earth, since similar shots from the ATS-3 satellite had already been made as early as 1967.
as early as 1967.

Problem:"Whatever You Like" is a song by American rapper T.I., released as the lead single (second overall) from his sixth studio album, Paper Trail (2008). The song was written by T.I., James Scheffer and David Siegel and produced by Jim Jonsin. "Whatever You Like" served as the third single from Paper Trail in the United Kingdom with a release date of 1 June 2009.

Answer this question: who sings you can do whatever you like?
Solution:OK... The relevant information is: "Whatever You Like" is a song by American rapper T.I., released as the lead single (second overall) from his sixth studio album, Paper Trail (2008).
American rapper T.I..

Student A:Context: The knockout stage of the 2018 FIFA World Cup was the second and final stage of the competition, following the group stage. It began on 30 June with the round of 16 and ended on 15 July with the final match, held at the Luzhniki Stadium in Moscow. The top two teams from each group (16 in total) advanced to the knockout stage to compete in a single-elimination style tournament. A third place play-off was also played between the two losing teams of the semi-finals.

Question: who advances in the group stage of the world cup?
Student B:OK... To answer the question, consider the following: The top two teams from each group (16 in total) advanced to the knockout stage to compete in a single-elimination style tournament.
The top two teams from each group.

Problem:Llamas appear to have originated from the central plains of North America about 40 million years ago. They migrated to South America about three million years ago during the Great American Interchange. By the end of the last ice age (10,000 -- 12,000 years ago), camelids were extinct in North America. As of 2007, there were over seven million llamas and alpacas in South America, and due to importation from South America in the late 20th century, there are now over 158,000 llamas and 100,000 alpacas in the United States and Canada.

When did the llama first appear in north america?
Solution:OK... The relevant sentence in the passage is: Llamas appear to have originated from the central plains of North America about 40 million years ago.
about 40 million years ago.

Student A:The overseas expansion under the crown of Castile was initiated under the royal authority and first accomplished by the Spanish conquistadores. The Americas were incorporated into the Spanish Empire, with the exception of Brazil and Canada, and the crown created civil and religious structures to administer the region. The motivations for colonial expansion were trade and the spread of the Catholic faith through indigenous conversions.

Based on this passage, why did spain establish colonies in north america?
Student B:OK... To answer the question, consider the following: The motivations for colonial expansion were trade and the spread of the Catholic faith through indigenous conversions.
trade and the spread of the Catholic faith through indigenous conversions.

Student A:Tuberculosis (TB) vaccines are vaccinations intended for the prevention of tuberculosis. Immunotherapy as a defence against TB was first proposed in 1890 by Robert Koch. Today, the only effective tuberculosis vaccine in common use is bacilli Calmette-Guérin (BCG), first used in 1921. About three out of every 10,000 people who get the vaccine experience side effects, which are usually minor except in severely immuno-depressed individuals. While BCG immunization provides fairly effective protection for infants and young children, (including defence against TB meningitis and miliary TB), its efficacy in adults is variable, ranging from 0 % to 80 %. Several variables have been considered as responsible for the varying outcomes. Demand for TB immunotherapy advancement exists because the disease has become increasingly drug-resistant.

Answer this question based on the passage: what is the name of the vaccine for tuberculosis?
Student B:
OK... To answer the above question, the relevant sentence is: Today, the only effective tuberculosis vaccine in common use is bacilli Calmette-Guérin (BCG), first used in 1921.
Calmette - Guérin ( BCG ).