Given a passage and a question, find the answer to the question based on the passage. The answer should consist of only one word that lies in the span of only one of the sentences in the passage.

Q: Paragraph: A deadweight loss , also known as excess burden or allocative inefficiency , is a loss of economic efficiency that can occur when equilibrium for a good or a service is not achieved . That can be caused by monopoly pricing in the case of artificial scarcity , an externality , a tax or subsidy , or a binding price ceiling or price floor such as a minimum wage .
Question: deadweight loss measures the inefficiency as the loss of


A: equilibrium
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Q: Paragraph: Double yellow lines mean no waiting at any time , unless there are signs that specifically indicate seasonal restrictions . They were first introduced in the UK by section 51 of the Road Traffic Act 1960 ( repealed in 1972 and replaced by later legislation ) .
Question: when were yellow lines introduced in the uk


A: 1960
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Q: Paragraph: McClellan had halted Lee 's invasion of Maryland , but Lee was able to withdraw his army back to Virginia without interference from the cautious McClellan . McClellan 's refusal to pursue Lee 's army led to his removal from command by President Abraham Lincoln in November . Although the battle was tactically inconclusive , the Confederate troops had withdrawn first from the battlefield , making it a Union strategic victory . It was a sufficiently significant victory to give Lincoln the confidence to announce his Emancipation Proclamation , which discouraged the British and French governments from pursuing any potential plans to recognize the Confederacy .
Question: who won the civil war battle of antietam


A:
Union
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