Input: Read this: The first step, where the wort is prepared by mixing the starch source (normally malted barley) with hot water, is known as "mashing". Hot water (known as "liquor" in brewing terms) is mixed with crushed malt or malts (known as "grist") in a mash tun. The mashing process takes around 1 to 2 hours, during which the starches are converted to sugars, and then the sweet wort is drained off the grains. The grains are now washed in a process known as "sparging". This washing allows the brewer to gather as much of the fermentable liquid from the grains as possible. The process of filtering the spent grain from the wort and sparge water is called wort separation. The traditional process for wort separation is lautering, in which the grain bed itself serves as the filter medium. Some modern breweries prefer the use of filter frames which allow a more finely ground grist.
Question: What is the modern process for wort separation called?

Output: unanswerable

Input: Read this: The early and mid-1980s saw economic trouble for Libya; from 1982 to 1986, the country's annual oil revenues dropped from $21 billion to $5.4 billion. Focusing on irrigation projects, 1983 saw construction start on "Gaddafi's Pet Project", the Great Man-Made River; although designed to be finished by the end of the decade, it remained incomplete at the start of the 21st century. Military spending increased, while other administrative budgets were cut back. Libya had long supported the FROLINAT militia in neighbouring Chad, and in December 1980, re-invaded Chad at the request of the Frolinat-controlled GUNT government to aid in the civil war; in January 1981, Gaddafi suggested a political merger. The Organisation of African Unity (OAU) rejected this, and called for a Libyan withdrawal, which came about in November 1981. The civil war resumed, and so Libya sent troops back in, clashing with French forces who supported the southern Chadian forces. Many African nations had tired of Libya's policies of interference in foreign affairs; by 1980, nine African states had cut off diplomatic relations with Libya, while in 1982 the OAU cancelled its scheduled conference in Tripoli in order to prevent Gaddafi gaining chairmanship. Proposing political unity with Morocco, in August 1984, Gaddafi and Moroccan monarch Hassan II signed the Oujda Treaty, forming the Arab-African Union; such a union was considered surprising due to the strong political differences and longstanding enmity that existed between the two governments. Relations remained strained, particularly due to Morocco's friendly relations with the U.S. and Israel; in August 1986, Hassan abolished the union. Domestic threats continued to plague Gaddafi; in May 1984, his Bab al-Azizia home was unsuccessfully attacked by a joint NFSLMuslim Brotherhood militia, and in the aftermath 5000 dissidents were arrested.
Question: How much money did Libya earn from oil in 1986?

Output: $5.4 billion

Input: Read this: Darwin's aims were twofold: to show that species had not been separately created, and to show that natural selection had been the chief agent of change. He knew that his readers were already familiar with the concept of transmutation of species from Vestiges, and his introduction ridicules that work as failing to provide a viable mechanism. Therefore, the first four chapters lay out his case that selection in nature, caused by the struggle for existence, is analogous to the selection of variations under domestication, and that the accumulation of adaptive variations provides a scientifically testable mechanism for evolutionary speciation.
Question: What were Darwin's two important aims about evolution?

Output: to show that species had not been separately created, and to show that natural selection had been the chief agent of change

Input: Read this: Book 1 (at the head of the Odyssean section) opens with a storm which Juno, Aeneas' enemy throughout the poem, stirs up against the fleet. The storm drives the hero to the coast of Carthage, which historically was Rome's deadliest foe. The queen, Dido, welcomes the ancestor of the Romans, and under the influence of the gods falls deeply in love with him. At a banquet in Book 2, Aeneas tells the story of the sack of Troy, the death of his wife, and his escape, to the enthralled Carthaginians, while in Book 3 he recounts to them his wanderings over the Mediterranean in search of a suitable new home. Jupiter in Book 4 recalls the lingering Aeneas to his duty to found a new city, and he slips away from Carthage, leaving Dido to commit suicide, cursing Aeneas and calling down revenge in a symbolic anticipation of the fierce wars between Carthage and Rome. In Book 5, Aeneas' father Anchises dies and funeral games are celebrated for him. On reaching Cumae, in Italy in Book 6, Aeneas consults the Cumaean Sibyl, who conducts him through the Underworld where Aeneas meets the dead Anchises who reveals Rome's destiny to his son.
Question: In which book does Aeneas' father die?

Output:
5