input question: Extract the answer to the question from the following context. Question: what is been discussed? Context: A very small amount of water vapor inside a light bulb can significantly affect lamp darkening. Water vapor dissociates into hydrogen and oxygen at the hot filament. The oxygen attacks the tungsten metal, and the resulting tungsten oxide particles travel to cooler parts of the lamp. Hydrogen from water vapor reduces the oxide, reforming water vapor and continuing this water cycle. The equivalent of a drop of water distributed over 500,000 lamps will significantly increase darkening. Small amounts of substances such as zirconium are placed within the lamp as a getter to react with any oxygen that may bake out of the lamp components during operation.???
output answer: water vapor

input question: Extract the answer to the question from the following context. Question: A social and vocal aspect that was described regarding sexual behavior that is deemed to increase risks to an individual is? Context: Given the potential consequences, engaging in sexual behavior is somewhat risky, particularly for adolescents. Having unprotected sex, using poor birth control methods (e.g. withdrawal), having multiple sexual partners, and poor communication are some aspects of sexual behavior that increase individual and/or social risk. Some qualities of adolescents' lives that are often correlated with risky sexual behavior include higher rates of experienced abuse, lower rates of parental support and monitoring. Adolescence is also commonly a time of questioning sexuality and gender. This may involve intimate experimentation with people identifying as the same gender as well as with people of differing genders. Such exploratory sexual behavior can be seen as similar to other aspects of identity, including the exploration of vocational, social, and leisure identity, all of which involve some risk.???
output answer: poor communication

input question: Extract the answer to the question from the following context. Question: 12 countries lying on the southeastern edge of the European continent such as Croatia are all together called? Context: South Slavic historically formed a dialect continuum, i.e. each dialect has some similarities with the neighboring one, and differences grow with distance. However, migrations from the 16th to 18th centuries resulting from the spread of Ottoman Empire on the Balkans have caused large-scale population displacement that broke the dialect continuum into many geographical pockets. Migrations in the 20th century, primarily caused by urbanization and wars, also contributed to the reduction of dialectal differences.???
output answer: Balkans

input question: Extract the answer to the question from the following context. Question: What brought about a resurgence in personal achievement in Renaissance Europe? Context: In Renaissance Europe, from about 1400 onwards, there was a revival of Classical learning accompanied by the development of Renaissance Humanism which placed greater emphasis on the role of the individual in society than had been the case during the Medieval period. Buildings were ascribed to specific architects Brunelleschi, Alberti, Michelangelo, Palladio and the cult of the individual had begun. There was still no dividing line between artist, architect and engineer, or any of the related vocations, and the appellation was often one of regional preference.???
output answer:
revival of Classical learning