The problem: Answer a question about this article:
Off-grid PV systems have traditionally used rechargeable batteries to store excess electricity. With grid-tied systems, excess electricity can be sent to the transmission grid, while standard grid electricity can be used to meet shortfalls. Net metering programs give household systems a credit for any electricity they deliver to the grid. This is handled by 'rolling back' the meter whenever the home produces more electricity than it consumes. If the net electricity use is below zero, the utility then rolls over the kilowatt hour credit to the next month. Other approaches involve the use of two meters, to measure electricity consumed vs. electricity produced. This is less common due to the increased installation cost of the second meter. Most standard meters accurately measure in both directions, making a second meter unnecessary.
What are the programs that gives credit to households for delivering electricity to the grid called?
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The answer: Net metering programs

The problem: Answer a question about this article:
Upon the invitation of Duke Konrad I of Masovia, the Teutonic Knights took possession of Prussia in the 13th century and created a monastic state to administer the conquered Old Prussians. Local Old-Prussian (north) and Polish (south) toponyms were gradually Germanised. The Knights' expansionist policies, including occupation of Polish Pomerania with Gdansk/Danzig and western Lithuania, brought them into conflict with the Kingdom of Poland and embroiled them in several wars, culminating in the Polish-Lithuanian-Teutonic War, whereby the united armies of Poland and Lithuania, defeated the Teutonic Order at the Battle of Grunwald (Tannenberg) in 1410. Its defeat was formalised in the Second Treaty of Thorn in 1466 ending the Thirteen Years' War, and leaving the former Polish region Pomerania/Pomerelia under Polish control. Together with Warmia it formed the province of Royal Prussia. Eastern Prussia remained under the Knights, but as a fief of Poland. 1466 and 1525 arrangements by kings of Poland were not verified by the Holy Roman Empire as well as the previous gains of the Teutonic Knights were not verified.
What year was the Second Treaty of Thorn enacted?
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The answer: 1466

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When home prices declined in the latter half of 2007 and the secondary mortgage market collapsed, IndyMac was forced to hold $10.7 billion of loans it could not sell in the secondary market. Its reduced liquidity was further exacerbated in late June 2008 when account holders withdrew $1.55 billion or about 7.5% of IndyMac's deposits. This "run" on the thrift followed the public release of a letter from Senator Charles Schumer to the FDIC and OTS. The letter outlined the Senator's concerns with IndyMac. While the run was a contributing factor in the timing of IndyMac's demise, the underlying cause of the failure was the unsafe and unsound manner in which the thrift was operated.
How much in deposits did account holders withdraw from IndyMac in late June 2008?
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The answer: $1.55 billion

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Others, such as Rep. Roger Sherman of Connecticut, believed the clause was unnecessary because the original Constitution only gave Congress stated powers, which did not include establishing a national religion. Anti-Federalists such as Rep. Thomas Tucker of South Carolina moved to strike the establishment clause completely because it could preempt the religious clauses in the state constitutions. However, the Anti-Federalists were unsuccessful in persuading the House of Representatives to drop the clause from the first amendment.
What power was not granted to Congress by the Constitution?
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The answer:
establishing a national religion