Input: Read this: Between January and May 1673, the Dutch East India Company forcibly took the island, before English reinforcements restored English East India Company control. The company experienced difficulty attracting new immigrants, and sentiments of unrest and rebellion fomented among the inhabitants. Ecological problems, including deforestation, soil erosion, vermin and drought, led Governor Isaac Pyke to suggest in 1715 that the population be moved to Mauritius, but this was not acted upon and the company continued to subsidise the community because of the island's strategic location. A census in 1723 recorded 1,110 people, including 610 slaves.
Question: How many slaves were on the island in 1723?

Output: 610


Input: Read this: Federal law originates with the Constitution, which gives Congress the power to enact statutes for certain limited purposes like regulating interstate commerce. The United States Code is the official compilation and codification of the general and permanent federal statutes. Many statutes give executive branch agencies the power to create regulations, which are published in the Federal Register and codified into the Code of Federal Regulations. Regulations generally also carry the force of law under the Chevron doctrine. Many lawsuits turn on the meaning of a federal statute or regulation, and judicial interpretations of such meaning carry legal force under the principle of stare decisis.
Question: What is an example of something Congress cannot regulate?

Output: unanswerable


Input: Read this: He turned to medicine at 16, and not only learned medical theory, but also by gratuitous attendance of the sick had, according to his own account, discovered new methods of treatment. The teenager achieved full status as a qualified physician at age 18, and found that "Medicine is no hard and thorny science, like mathematics and metaphysics, so I soon made great progress; I became an excellent doctor and began to treat patients, using approved remedies." The youthful physician's fame spread quickly, and he treated many patients without asking for payment.
Question: What subject did Avicenna start studying at 16?

Output: medicine


Input: Read this: The only cosmetic difference between an RLV disc and a regular factory-pressed LaserDiscs is their reflective purple-violet (or blue with some RLV discs) color resulting from the dye embedded in the reflective layer of the disc to make it recordable, as opposed to the silver mirror appearance of regular LDs. The purplish color of RLVs is very similar to DVD-R and DVD+R discs. RLVs were popular for making short-run quantities of LaserDiscs for specialized applications such as interactive kiosks and flight simulators.
Question: For what purpose were RLVs popular?

Output:
making short-run quantities of LaserDiscs for specialized applications such as interactive kiosks and flight simulators