Student A:The sinoatrial node (SA node), also known as sinus node, is a group of cells located in the wall of the right atrium of the heart. These cells have the ability to spontaneously produce an electrical impulse (action potential; see below for more details), that travels through the heart via the electrical conduction system (see figure 1) causing it to contract. In a healthy heart, the SA node continuously produces action potential, setting the rhythm of the heart and so is known as the heart's natural pacemaker. The rate of action potential production (and therefore the heart rate) is influenced by nerves that supply it.

Based on this passage, where is the sa node located in the heart?
Student B:OK... The relevant sentence in the passage is: The sinoatrial node (SA node), also known as sinus node, is a group of cells located in the wall of the right atrium of the heart.
the wall of the right atrium.

Problem:Later Sachs added a fifth category, electrophones, such as theremins, which produce sound by electronic means. Modern synthesizers and electronic instruments fall in this category. Within each category are many subgroups. The system has been criticised and revised over the years, but remains widely used by ethnomusicologists and organologists.

Answer this question based on the passage: what category of instruments do synthesizers fall in?
Solution:OK... The relevant information is: Modern synthesizers and electronic instruments fall in this category.
electrophones.

Student A:Smiling Buddha (MEA designation: Pokhran-I) was the assigned code name of India's first successful nuclear bomb test on 18 May 1974. The bomb was detonated on the army base, Pokhran Test Range (PTR), in Rajasthan by the Indian Army under the supervision of several key Indian generals.

When did india conduct her first nuclear test?
Student B:OK... To answer this question, we should know that: Smiling Buddha (MEA designation: Pokhran-I) was the assigned code name of India's first successful nuclear bomb test on 18 May 1974.
18 May 1974.

Problem:The median age upon accession to the presidency is 55 years and 3 months. This is how old Lyndon B. Johnson was at the time of his inauguration. The youngest person to assume the office was Theodore Roosevelt, who became president at the age of 42 years, 322 days, following William McKinley's assassination; the oldest was Donald Trump, who was 70 years, 220 days old at his inauguration. The youngest person to be elected president was John F. Kennedy, at 43 years, 163 days of age on election day; the oldest was Ronald Reagan, who was 73 years, 274 days old at the time of his election to a second term.

Answer this question based on the passage: who was the oldest president to be elected?
Solution:OK... The important part for answering this question is: The youngest person to assume the office was Theodore Roosevelt, who became president at the age of 42 years, 322 days, following William McKinley's assassination; the oldest was Donald Trump, who was 70 years, 220 days old at his inauguration.
Donald Trump.

Student A:Context: Little Caesars Arena is a multi-purpose arena in Midtown Detroit. Construction began on April 24, 2015, following a formal groundbreaking ceremony on September 25, 2014. Opened on September 5, 2017, the arena, which cost $862.9 million to construct, succeeded both Joe Louis Arena and The Palace of Auburn Hills as the homes of the Detroit Red Wings of the National Hockey League (NHL) and the Detroit Pistons of the National Basketball Association (NBA), respectively.

Question: where do the detroit red wings play hockey?
Student B:OK... The relevant sentence in the passage is: Opened on September 5, 2017, the arena, which cost $862.9 million to construct, succeeded both Joe Louis Arena and The Palace of Auburn Hills as the homes of the Detroit Red Wings of the National Hockey League (NHL) and the Detroit Pistons of the National Basketball Association (NBA), respectively.
Little Caesars Arena.

Student A:Aron Kodesh comes from Hebrew אָרוֹן קׄדֶש ‬ ʼārōn qōdeš (i.e. aron kodesh), Holy Ark. This name is a reference to the' ārōn haqqōdeš, the Hebrew name for the Ark of the Covenant which was stored in the Holy of Holies in the inner sanctuary of both the ancient Tabernacle and the Temple in Jerusalem. Similarly, Hekhál, also written hechal, echal or heichal -- and sometimes also Echal Kodesh (mainly among Balkan Sephardim) comes from Hebrew הֵיכָל ‬ (hēkhāl)' palace', was used in the same time period to refer to the inner sanctuary. The hekhal contained the Menorah, Altar of Incense, and Table of the Showbread.

Answer this question: what does aron hakodesh refer to in english?
Student B:
OK... The relevant information is: This name is a reference to the' ārōn haqqōdeš, the Hebrew name for the Ark of the Covenant which was stored in the Holy of Holies in the inner sanctuary of both the ancient Tabernacle and the Temple in Jerusalem.
the Hebrew name for the Ark of the Covenant which was stored in the Holy of Holies in the inner sanctuary of both the ancient Tabernacle and the Temple in Jerusalem.