Problem: Molotov%E2%80%93Ribbentrop Pact:

Before the pact's announcement, Communists in the West denied that such a treaty would be signed. Future member of the Hollywood Ten Herbert Biberman denounced rumors as "Fascist propaganda". Earl Browder, head of the Communist Party USA, stated that "there is as much chance of agreement as of Earl Browder being elected president of the Chamber of Commerce." Beginning in September 1939, the Soviet Comintern suspended all anti-Nazi and anti-fascist propaganda, explaining that the war in Europe was a matter of capitalist states attacking each other for imperialist purposes. Western Communists acted accordingly; while before they supported protecting collective security, now they denounced Britain and France going to war.

Who was part of Hollywood Nine?
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A: unanswerable


Problem: Eritrea:

At Buya in Eritrea, one of the oldest hominids representing a possible link between Homo erectus and an archaic Homo sapiens was found by Italian scientists. Dated to over 1 million years old, it is the oldest skeletal find of its kind and provides a link between hominids and the earliest anatomically modern humans. It is believed that the section of the Danakil Depression in Eritrea was also a major player in terms of human evolution, and may contain other traces of evolution from Homo erectus hominids to anatomically modern humans.

What did German scientists find in Eritrea?
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A: unanswerable


Problem: Valencia:

During the second half of the 19th century the bourgeoisie encouraged the development of the city and its environs; land-owners were enriched by the introduction of the orange crop and the expansion of vineyards and other crops,. This economic boom corresponded with a revival of local traditions and of the Valencian language, which had been ruthlessly suppressed from the time of Philip V. Around 1870, the Valencian Renaissance, a movement committed to the revival of the Valencian language and traditions, began to gain ascendancy. In its early stages the movement inclined to the romanticism of the poet Teodor Llorente, and resisted the more assertive remonstrances of Constantine Llombart, founder of the still extant cultural society, Lo Rat Penat, which is dedicated to the promotion and dissemination of the Valencian language and culture.

Who got rich from the Valencian orange crop and vineyards?
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A: land-owners


Problem: Incandescent light bulb:

Many arrangements of electrical contacts are used. Large lamps may have a screw base (one or more contacts at the tip, one at the shell) or a bayonet base (one or more contacts on the base, shell used as a contact or used only as a mechanical support). Some tubular lamps have an electrical contact at either end. Miniature lamps may have a wedge base and wire contacts, and some automotive and special purpose lamps have screw terminals for connection to wires. Contacts in the lamp socket allow the electric current to pass through the base to the filament. Power ratings for incandescent light bulbs range from about 0.1 watt to about 10,000 watts.

What is the name for a base with one or more contacts at the tip and one at the shell?
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A:
screw base