The largest stock exchange in Canada, the Toronto Stock Exchange is the main Canadian exchange for trading large-cap equity securities. In 1997, the exchange moved from traditional floor trading to electronic trading. In 2000, it demutualized to become a for-profit corporation. It is a leader in the oil, gas, and mining industries, with more such companies trading on it than on any other exchange in the world. The Toronto Stock Exchange is also home to all of Canada’s “Big Five,” which are what? Discuss
Source: The Free Dictionary
Among the most influential figures in 20th-century art, Picasso was a Spanish-born French artist and a founder of cubism. A prolific artist, he is best known for works from his so-called Blue Period and Rose Period, as well the enormous Guernica, whose violent imagery—inspired by the Spanish Civil War—condemned the useless destruction of life. Often a controversial figure for both his art and his politics, Picasso was once questioned about the theft of what famous painting? 
Dark matter is a hypothetical form of matter that is believed to make up more than 90% of the mass of the universe but is not readily visible because it neither emits nor absorbs light. Its existence could explain gravitational anomalies observed in the motion and distribution of galaxies. In 1993, astronomers identified part of the dark matter in the form of stray planets and brown dwarfs, and, possibly, stars that have failed to ignite. What acronym is used to refer to this hot, dark matter? 
Dedicated in 1260 in the presence of King Louis IX, the Cathedral of Notre-Dame at Chartres is one of the most influential examples of High Gothic architecture. The main structure was built between 1194 and 1220 and replaced a 12th-century church—of which only the crypt, the base, and the western facade remain. Recognized by its imposing spires, the cathedral is known for its stained-glass windows and Renaissance choir screen. It is also home to the Sancta Camisa, which is what? 
The 
Leeuwenhoek was a Dutch scientist and maker of microscopes whose observations helped lay the foundations for the sciences of bacteriology and protozoology. He assembled hundreds of microscopes, nine of which survive today and can magnify objects as much as 275 times. In the course of his examination of innumerable microorganisms and tissue samples, he gave the first complete descriptions of bacteria and protozoa—which he called animalcules. What likely kindled his interest in microscopes? 
Bogart, posthumously named the Greatest Male Star of All Time by the American Film Institute, was an Academy Award-winning actor whose accomplishments in the film industry are recognized worldwide. Though Bogart began acting in theater, he is best known for his work in films like The Maltese Falcon and Casablanca. He became an international cult figure through his roles as a tough, romantic loner, appearing in 75 feature motion pictures. How many times was Bogart married?