I know that the answer to the question "Which time period happened second, the early Ordovician or the end of the Carboniferous?" is in "Since annelids are soft-bodied, their fossils are rare. Polychaetes' fossil record consists mainly of the jaws that some species had and the mineralized tubes that some secreted. Some Ediacaran fossils such as Dickinsonia in some ways resemble polychaetes, but the similarities are too vague for these fossils to be classified with confidence. The small shelly fossil Cloudina, from 549 to 542 million years ago, has been classified by some authors as an annelid, but by others as a cnidarian (i.e. in the phylum to which jellyfish and sea anemones belong). Until 2008 the earliest fossils widely accepted as annelids were the polychaetes Canadia and Burgessochaeta, both from Canada's Burgess Shale, formed about 505 million years ago in the early Cambrian. Myoscolex, found in Australia and a little older than the Burgess Shale, was possibly an annelid. However, it lacks some typical annelid features and has features which are not usually found in annelids and some of which are associated with other phyla. Then Simon Conway Morris and John Peel reported Phragmochaeta from Sirius Passet, about 518 million years old, and concluded that it was the oldest annelid known to date. There has been vigorous debate about whether the Burgess Shale fossil Wiwaxia was a mollusc or an annelid. Polychaetes diversified in the early Ordovician, about 488 to 474 million years ago. It is not until the early Ordovician that the first annelid jaws are found, thus the crown-group cannot have appeared before this date and probably appeared somewhat later. By the end of the Carboniferous, about 299 million years ago, fossils of most of the modern mobile polychaete groups had appeared. Many fossil tubes look like those made by modern sessile polychaetes , but the first tubes clearly produced by polychaetes date from the Jurassic, less than 199 million years ago.". Can you tell me what it is?
Ans: the end of the Carboniferous

I know that the answer to the question "Northwestern joined 5 other schools in __" is in "Northwestern was founded in 1851 by John Evans, for whom the City of Evanston is named, and eight other lawyers, businessmen and Methodist leaders. Its founding purpose was to serve the Northwest Territory, an area that today includes the states of Ohio, Indiana, Illinois, Michigan, Wisconsin and parts of Minnesota. Instruction began in 1855; women were admitted in 1869. Today, the main campus is a 240-acre (97 ha) parcel in Evanston, along the shores of Lake Michigan just 12 miles north of downtown Chicago. The university's law, medical, and professional schools are located on a 25-acre (10 ha) campus in Chicago's Streeterville neighborhood. In 2008, the university opened a campus in Education City, Doha, Qatar with programs in journalism and communication.". Can you tell me what it is?
Ans: Doha, Qatar

I know that the answer to the question "What stored the energy of the capacitor?" is in "Last but not least the electric double-layer capacitor (now Supercapacitors) were invented. In 1957 H. Becker developed a "Low voltage electrolytic capacitor with porous carbon electrodes". He believed that the energy was stored as a charge in the carbon pores used in his capacitor as in the pores of the etched foils of electrolytic capacitors. Because the double layer mechanism was not known by him at the time, he wrote in the patent: "It is not known exactly what is taking place in the component if it is used for energy storage, but it leads to an extremely high capacity.".". Can you tell me what it is?
Ans: the component

I know that the answer to the question "What number is not included in the 72.1 million tourist figure?" is in "There were 72.1 million visitors to the city's museums and monuments in 2013. The city's top tourist attraction was the Notre Dame Cathedral, which welcomed 14 million visitors in 2013. The Louvre museum had more than 9.2 million visitors in 2013, making it the most visited museum in the world. The other top cultural attractions in Paris in 2013 were the Basilique du Sacre-Cur (10.5 million visitors); the Eiffel Tower (6,740,000 visitors); the Centre Pompidou (3,745,000 visitors) and Musee d'Orsay (3,467,000 visitors). In the Paris region, Disneyland Paris, in Marne-la-Vallee, 32 km (20 miles) east of the centre of Paris, was the most visited tourist attraction in France, with 14.9 million visitors in 2013.". Can you tell me what it is?
Ans: 14.9 million