Problem: Given the question: Extract the answer to the question from the following context. Question: Is St. John's farther away from London or Edmonton? Context: St. John's is located along the coast of the Atlantic Ocean, on the northeast of the Avalon Peninsula in southeast Newfoundland. The city covers an area of 446.04 square kilometres (172.22 sq mi) and is the most easterly city in North America, excluding Greenland; it is 295 miles (475 km) closer to London, England than it is to Edmonton, Alberta. The city of St. John's is located at a distance by air of 3,636 kilometres (2,259 mi) from Lorient, France which lies on a nearly precisely identical latitude across the Atlantic on the French western coast. The city is the largest in the province and the second largest in the Atlantic Provinces after Halifax, Nova Scotia. Its downtown area lies to the west and north of St. John's Harbour, and the rest of the city expands from the downtown to the north, south, east and west.
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The answer is:
Edmonton

Problem: Given the question: Extract the answer to the question from the following context. Question: The theory that contains virtual particles that hop into and out of existence is called? Context: QED vacuum has interesting and complex properties. In QED vacuum, the electric and magnetic fields have zero average values, but their variances are not zero. As a result, QED vacuum contains vacuum fluctuations (virtual particles that hop into and out of existence), and a finite energy called vacuum energy. Vacuum fluctuations are an essential and ubiquitous part of quantum field theory. Some experimentally verified effects of vacuum fluctuations include spontaneous emission and the Lamb shift. Coulomb's law and the electric potential in vacuum near an electric charge are modified.
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The answer is:
quantum field theory

Problem: Given the question: Extract the answer to the question from the following context. Question: What is web hosting? Context: Internet services typically provided by ISPs include Internet access, Internet transit, domain name registration, web hosting, Usenet service, and colocation.
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The answer is:
Internet services