Input: Read this: Professor Aram Sinnreich, in his book The Piracy Crusade, states that the connection between declining music sails and the creation of peer to peer file sharing sites such as Napster is tenuous, based on correlation rather than causation. He argues that the industry at the time was undergoing artificial expansion, what he describes as a "'perfect bubble'—a confluence of economic, political, and technological forces that drove the aggregate value of music sales to unprecedented heights at the end of the twentieth century".
Question: What doesn't he call the merging of economic, political and technological forces that drove the music industry?

Output: unanswerable


Input: Read this: Until the 16th century, the Low Countries – corresponding roughly to the present-day Netherlands, Belgium, and Luxembourg – consisted of a number of duchies, counties, and Prince-bishoprics, almost all of which were under the supremacy of the Holy Roman Empire, with the exception of the county of Flanders, which was under the Kingdom of France.
Question: What county was under the Holy Roman Empire?

Output: unanswerable


Input: Read this: "Azure, three ships with three masts, rigged and under full sail, the sails, pennants and ensigns Argent, each charged with a cross Gules; on a chief of the second a pale quarterly Azure and Gules, on the 1st and 4th a fleur-de-lis or, on the 2nd and 3rd a leopard or, between two roses Gules seeded Or barbed Vert." The shield had as a crest: "A sphere without a frame, bounded with the Zodiac in bend Or, between two pennants flottant Argent, each charged with a cross Gules, over the sphere the words DEUS INDICAT" (Latin: God Indicates). The supporters were two sea lions (lions with fishes' tails) and the motto was DEO DUCENTE NIL NOCET (Latin: Where God Leads, Nothing Hurts).
Question: What does DEUS INDICAT mean?

Output: God Indicates


Input: Read this: Breakthrough pain is transitory acute pain that comes on suddenly and is not alleviated by the patient's normal pain management. It is common in cancer patients who often have background pain that is generally well-controlled by medications, but who also sometimes experience bouts of severe pain that from time to time "breaks through" the medication. The characteristics of breakthrough cancer pain vary from person to person and according to the cause. Management of breakthrough pain can entail intensive use of opioids, including fentanyl.
Question: What class of medication is fentanyl an example of?

Output:
opioids