Student A:Arabic, with all its dialects, are the most widely spoken languages in the Middle East, with Literary Arabic being official in all North African and in most West Asian countries. Arabic dialects are also spoken in some adjacent areas in neighbouring Middle Eastern non-Arab countries. It is a member of the Semitic branch of the Afro-Asiatic languages. Several Modern South Arabian languages such as Mehri and Soqotri are also spoken Yemen and Oman. Another Semitic language such as Aramaic and its dialects are spoken mainly by Assyrians and Mandaeans. There is also a Oasis Berber-speaking community in Egypt where the language is also known as Siwa. It is a non-Semitic Afro-Asiatic language.

Answer this question: what is the most common language spoken in the middle east?
Student B:OK... This is the relevant information: Arabic, with all its dialects, are the most widely spoken languages in the Middle East, with Literary Arabic being official in all North African and in most West Asian countries.
Arabic , with all its dialects.

Problem:Le bonheur de vivre (The Joy of Life) is a painting by Henri Matisse. Along with Picasso's Les Demoiselles d'Avignon, Le bonheur de vivre is regarded as one of the pillars of early modernism. The monumental canvas was first exhibited at the Salon des Independants of 1906, where its cadmium colors and spatial distortions caused a public expression of protest and outrage.

Answer this question based on the passage: the joy of life was painted in which style?
Solution:OK... To answer the above question, the relevant sentence is: Along with Picasso's Les Demoiselles d'Avignon, Le bonheur de vivre is regarded as one of the pillars of early modernism.
early modernism.

Student A:In general, the more massive a star is, the shorter its lifespan on the main sequence. After the hydrogen fuel at the core has been consumed, the star evolves away from the main sequence on the HR diagram. The behavior of a star now depends on its mass, with stars below 0.23 M becoming white dwarfs directly, whereas stars with up to ten solar masses pass through a red giant stage. More massive stars can explode as a supernova, or collapse directly into a black hole.

Answer this question: how does a main-sequence star's lifetime depend on its overall mass?
Student B:OK... The important part for answering this question is: In general, the more massive a star is, the shorter its lifespan on the main sequence.
the more massive a star is , the shorter its lifespan on the main sequence.

Problem:The design of the Eiffel Tower was the product of Maurice Koechlin and Emile Nouguier, two senior engineers working for the Compagnie des Etablissements Eiffel, after discussion about a suitable centrepiece for the proposed 1889 Exposition Universelle, a world's fair to celebrate the centennial of the French Revolution. Eiffel openly acknowledged that inspiration for a tower came from the Latting Observatory built in New York City in 1853. In May 1884, working at home, Koechlin made a sketch of their idea, described by him as "a great pylon, consisting of four lattice girders standing apart at the base and coming together at the top, joined together by metal trusses at regular intervals". Eiffel initially showed little enthusiasm, but he did approve further study, and the two engineers then asked Stephen Sauvestre, the head of company's architectural department, to contribute to the design. Sauvestre added decorative arches to the base of the tower, a glass pavilion to the first level, and other embellishments.

What was the reason for the eiffel tower?
Solution:OK... To answer this question, we should know that: The design of the Eiffel Tower was the product of Maurice Koechlin and Emile Nouguier, two senior engineers working for the Compagnie des Etablissements Eiffel, after discussion about a suitable centrepiece for the proposed 1889 Exposition Universelle, a world's fair to celebrate the centennial of the French Revolution.
a suitable centrepiece for the proposed 1889 Exposition Universelle , a world 's fair to celebrate the centennial of the French Revolution.

Student A:In the United States Army, U.S. Marine Corps, and U.S. Air Force, a lieutenant colonel is a field grade military officer rank just above the rank of major and just below the rank of colonel. It is equivalent to the naval rank of commander in the other uniformed services.

Answer this question: what rank is lieutenant colonel in the marines?
Student B:OK... This is the relevant information: In the United States Army, U.S. Marine Corps, and U.S. Air Force, a lieutenant colonel is a field grade military officer rank just above the rank of major and just below the rank of colonel.
a field grade military officer rank just above the rank of major and just below the rank of colonel.

Student A:Red beans and rice is an emblematic dish of Louisiana Creole cuisine (not originally of Cajun cuisine) traditionally made on Mondays with red beans, vegetables (bell pepper, onion, and celery), spices (thyme, cayenne pepper, and bay leaf) and pork bones as left over from Sunday dinner, cooked together slowly in a pot and served over rice. Meats such as ham, sausage (most commonly andouille and Chaurice), and tasso ham are also frequently used in the dish. The dish is customary-ham was traditionally a Sunday meal and Monday was washday. A pot of beans could sit on the stove and simmer while the women were busy scrubbing clothes. The dish is now fairly common throughout the Southeast. Similar dishes are common in Latin American cuisine, including moros y cristianos and gallo pinto.

Where does red beans and rice come from?
Student B:
OK... The relevant sentence in the passage is: Red beans and rice is an emblematic dish of Louisiana Creole cuisine (not originally of Cajun cuisine) traditionally made on Mondays with red beans, vegetables (bell pepper, onion, and celery), spices (thyme, cayenne pepper, and bay leaf) and pork bones as left over from Sunday dinner, cooked together slowly in a pot and served over rice.
Louisiana Creole cuisine.