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.
Example: Paragraph: Nix v. Hedden , 149 U.S. 304 ( 1893 ) , was a decision by the Supreme Court of the United States that , under U.S. customs regulations , the tomato should be classified as a vegetable rather than a fruit . The Court 's unanimous opinion held that the Tariff Act of 1883 used the ordinary meaning of the words `` fruit '' and `` vegetable , '' instead of the technical botanical meaning .
Question: is tomato a fruit or vegetable us supreme court

Example solution: vegetable
Example explanation: The answer 'vegetable' is correct as it lies in the sentence - "Nix v. Hedden , 149 U.S. 304 ( 1893 ) , was a decision by the Supreme Court of the United States that , under U.S. customs regulations , the tomato should be classified as a vegetable rather than a fruit ", which is a part of the passage.

Problem: 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


Solution: equilibrium