Problem: Text: Sunk costs are sometimes contrasted with prospective costs, which are future costs that may be incurred or changed if an action is taken. In that regard, both retrospective and prospective costs could be either fixed costs (continuous for as long as the business is in operation and unaffected by output volume) or variable costs (dependent on volume). However, many economists consider it a mistake to classify sunk costs as ''fixed'' or ''variable.'' For example, if a firm sinks $400 million on an enterprise software installation, that cost is ''sunk'' because it was a one-time expense and cannot be recovered once spent. A ''fixed'' cost would be monthly payments made as part of a service contract or licensing deal with the company that set up the software. The upfront irretrievable payment for the installation should not be deemed a ''fixed'' cost, with its cost spread out over time. Sunk costs should be kept separate. The ''variable costs'' for this project might include data centre power usage, for example.

Question: is a fixed cost always a sunk cost?
A: no

Problem: Text: The Last House on the Left is a 1972 American exploitation horror film written, edited, and directed by Wes Craven and produced by Sean S. Cunningham. The film stars Sandra Peabody, Lucy Grantham, David A. Hess, Fred Lincoln, Jeramie Rain, and Marc Sheffler. The plot revolves around two teenage girls who are taken into the woods and tortured by a gang of murderous thugs. The story is inspired by the 1960 Swedish film The Virgin Spring, directed by Ingmar Bergman, which in turn is based on a Swedish ballad, ''Tores dottrar i Wange''.

Question: is the movie last house on the left a true story?
A: no

Problem: Text: In South Africa, the Firearms Control Act 60 of 2000 regulates the ownership of firearms by civilians. Ownership of a firearm is conditional on a competency test and several other factors, including background checking of the applicant, inspection of an owner's premises, and licensing of the weapon by the police introduced in July 2004. The process is currently undergoing review, as the police are at present, not able to adequately or within reasonable time, process either competency certification, new licences or renewal of existing licences. Minimum waiting period used to exceed 2 years from date of application. The Central Firearms Registry implemented a turnaround strategy that has significantly improved the processing period of new licences. The maximum time allowed to process a licence application is now 90 days.

Question: can you have a gun in south africa?
A:
yes