Article: Houston is the seat of the internationally renowned Texas Medical Center, which contains the world's largest concentration of research and healthcare institutions. All 49 member institutions of the Texas Medical Center are non-profit organizations. They provide patient and preventive care, research, education, and local, national, and international community well-being. Employing more than 73,600 people, institutions at the medical center include 13 hospitals and two specialty institutions, two medical schools, four nursing schools, and schools of dentistry, public health, pharmacy, and virtually all health-related careers. It is where one of the first—and still the largest—air emergency service, Life Flight, was created, and a very successful inter-institutional transplant program was developed. More heart surgeries are performed at the Texas Medical Center than anywhere else in the world.

Question: How many hospitals belong to the Medical Center group of organizations?
Ans: 13


Article: Chopin seldom performed publicly in Paris. In later years he generally gave a single annual concert at the Salle Pleyel, a venue that seated three hundred. He played more frequently at salons, but preferred playing at his own Paris apartment for small groups of friends. The musicologist Arthur Hedley has observed that "As a pianist Chopin was unique in acquiring a reputation of the highest order on the basis of a minimum of public appearances—few more than thirty in the course of his lifetime." The list of musicians who took part in some of his concerts provides an indication of the richness of Parisian artistic life during this period. Examples include a concert on 23 March 1833, in which Chopin, Liszt and Hiller performed (on pianos) a concerto by J.S. Bach for three keyboards; and, on 3 March 1838, a concert in which Chopin, his pupil Adolphe Gutmann, Charles-Valentin Alkan, and Alkan's teacher Joseph Zimmermann performed Alkan's arrangement, for eight hands, of two movements from Beethoven's 7th symphony. Chopin was also involved in the composition of Liszt's Hexameron; he wrote the sixth (and final) variation on Bellini's theme. Chopin's music soon found success with publishers, and in 1833 he contracted with Maurice Schlesinger, who arranged for it to be published not only in France but, through his family connections, also in Germany and England.

Question: Where did Chopin prefer to play for people?
Ans: apartment


Article: Pharmaceutical companies whose products are used in the three-drug cocktails for lethal injections are predominantly European, and they have strenuously objected to the use of their drugs for executions and taken steps to prevent their use. For example, Hospira, the sole American manufacturer of sodium thiopental, the critical anesthetic in the three-drug cocktail, announced in 2011 that it would no longer manufacture the drug for the American market, in part for ethical reasons and in part because its transfer of sodium thiopental manufacturing to Italy would subject it to the European Union's Torture Regulation, which forbids the use of any product manufactured within the Union for torture (as execution by lethal injection is considered by the Regulation). Since the drug manufacturers began taking these steps and the EU regulation ended the importation of drugs produced in Europe, the resulting shortage of execution drugs has led to or influenced decisions to impose moratoria in Arkansas, California, Kentucky, Louisiana, Mississippi, Montana, Nevada, North Carolina, and Tennessee.

Question: What lethal injection drug is manufactured by Hospira?
Ans: sodium thiopental


Article: Leibniz describes a space that exists only as a relation between objects, and which has no existence apart from the existence of those objects. Motion exists only as a relation between those objects. Newtonian space provided the absolute frame of reference within which objects can have motion. In Newton's system, the frame of reference exists independently of the objects contained within it. These objects can be described as moving in relation to space itself. For many centuries, the evidence of a concave water surface held authority.

Question: For how long did the evidence of a concave water surface hold authority in reference to space?
Ans:
many centuries