Student A:Passage: Coca-Cola, or Coke, is a carbonated soft drink produced by The Coca-Cola Company. Originally intended as a patent medicine, it was invented in the late 19th century by John Pemberton and was bought out by businessman Asa Griggs Candler, whose marketing tactics led Coca-Cola to its dominance of the world soft-drink market throughout the 20th century. The drink's name refers to two of its original ingredients, which were kola nuts (a source of caffeine) and coca leaves. The current formula of Coca-Cola remains a trade secret, although a variety of reported recipes and experimental recreations have been published.

Question: Based on this passage, where does the caffeine in coca cola come from?
Student B:OK... The relevant information is: The drink's name refers to two of its original ingredients, which were kola nuts (a source of caffeine) and coca leaves.
kola nuts ( a source of caffeine ).

Student A:Context: Redding, officially the City of Redding, is the county seat of Shasta County, California, in the northern part of the state. It lies along the Sacramento River, 162 miles (261 kilometers) north of Sacramento, and 120 miles (190 km) south of California's northern border, shared with the state of Oregon. Interstate 5 bisects the entire city, from the south to north before it approaches Shasta Lake, which is located 15 miles (24 km) to the north. The 2010 population was 89,861. Redding is the largest city in the Shasta Cascade region, and it is the sixth-largest city in the Sacramento Valley, behind Sacramento, Elk Grove, Roseville, Vacaville and Chico.

Question: where is redding california located on a map?
Student B:OK... To answer the question, consider the following: It lies along the Sacramento River, 162 miles (261 kilometers) north of Sacramento, and 120 miles (190 km) south of California's northern border, shared with the state of Oregon.
along the Sacramento River , 162 miles ( 261 kilometers ) north of Sacramento , and 120 miles ( 190 km ) south of California 's northern border.

Student A:The cardiovascular centre is a part of the human brain responsible for the regulation of the rate at which the heart beats through the nervous and endocrine systems. It is found in the medulla oblongata. Normally, the heart beats without nervous control, but in some situations (e.g., exercise, body trauma), the cardiovascular centre is responsible for altering the rate at which the heart beats. It also mediates respiratory sinus arrhythmia.

Answer this question based on the passage: where is the cardiac center located in the brain?
Student B:OK... The relevant information is: It is found in the medulla oblongata.
the medulla oblongata.

Student A:Croatia national football team have appeared in the FIFA World Cup on five occasions (in 1998, 2002, 2006, 2014 and 2018) since gaining independence in 1991. Before that, from 1930 to 1990 Croatia was part of Yugoslavia. Their best result thus far was silver position at the 2018 final, where they lost 4-2 to France.

Answer this question: how far has croatia gone in the world cup before?
Student B:
OK... To answer the above question, the relevant sentence is: Their best result thus far was silver position at the 2018 final, where they lost 4-2 to France.
silver position.