Student A:For example, a Brnsted-Lowry model for the dissociation of hydrochloric acid (HCl) in aqueous solution would be the following:

Based on this passage, hcl is an example of an acid or base?
Student B:OK... The relevant sentence in the passage is: For example, a Brnsted-Lowry model for the dissociation of hydrochloric acid (HCl) in aqueous solution would be the following:
acid.

Student A:Canada has hosted the winter games twice: in Calgary in 1988, and in Vancouver in 2010. Canada has also hosted the Summer Olympic Games once, in 1976 in Montreal.

Answer this question based on the passage: how many times has canada hosted the winter olympic games?
Student B:OK... The important part for answering this question is: Canada has hosted the winter games twice: in Calgary in 1988, and in Vancouver in 2010.
twice.

Student A:The Reuben sandwich is an American hot sandwich composed of corned beef, Swiss cheese, sauerkraut, and Russian dressing, grilled between slices of rye bread. Several variants exist.

What is the meat in a reuben sandwich?
Student B:OK... The relevant sentence in the passage is: The Reuben sandwich is an American hot sandwich composed of corned beef, Swiss cheese, sauerkraut, and Russian dressing, grilled between slices of rye bread.
corned beef.

Student A:Context: There are currently 41 active-duty four-star officers in the uniformed services of the United States: 11 in the Army, 4 in the Marine Corps, 9 in the Navy, 14 in the Air Force, 2 in the Coast Guard, and 1 in the Public Health Service Commissioned Corps. Of the seven federal uniformed services, the National Oceanic and Atmospheric Administration Commissioned Officer Corps is the only service that does not have an established four-star position.

Question: how many 4 star generals are there in the us army?
Student B:
OK... The relevant sentence in the passage is: There are currently 41 active-duty four-star officers in the uniformed services of the United States: 11 in the Army, 4 in the Marine Corps, 9 in the Navy, 14 in the Air Force, 2 in the Coast Guard, and 1 in the Public Health Service Commissioned Corps.
11.