Q: The role of yeast in winemaking is the most important element that distinguishes wine from grape juice. In the absence of oxygen, yeast converts the sugars of wine grapes into alcohol and carbon dioxide through the process of fermentation. The more sugars in the grapes, the higher the potential alcohol level of the wine if the yeast are allowed to carry out fermentation to dryness. Sometimes winemakers will stop fermentation early in order to leave some residual sugars and sweetness in the wine such as with dessert wines. This can be achieved by dropping fermentation temperatures to the point where the yeast are inactive, sterile filtering the wine to remove the yeast or fortification with brandy to kill off the yeast cells. If fermentation is unintentionally stopped, such as when the yeasts become exhausted of available nutrients, and the wine has not yet reached dryness this is considered a stuck fermentation.

Based on this passage, which reaction is performed by yeast in wine-making?
A: the process of fermentation. How to explain the answer? To answer the question, consider the following: In the absence of oxygen, yeast converts the sugars of wine grapes into alcohol and carbon dioxide through the process of fermentation.

Q: Time in the United States, by law, is divided into nine standard time zones covering the states and its possessions, with most of the United States observing daylight saving time (DST) for approximately the spring, summer, and fall months. The time zone boundaries and DST observance are regulated by the Department of Transportation. Official and highly precise timekeeping services (clocks) are provided by two federal agencies: the National Institute of Standards and Technology (NIST) (an agency of the Department of Commerce); and its military counterpart, the United States Naval Observatory (USNO). The clocks run by these services are kept synchronized with each other as well as with those of other international timekeeping organizations.

Answer this question: how many time zones does the united states have?
A: nine. How to explain the answer? The relevant information is: Time in the United States, by law, is divided into nine standard time zones covering the states and its possessions, with most of the United States observing daylight saving time (DST) for approximately the spring, summer, and fall months.

Q: Since its inception, the J.C. Daniel Award has been bestowed on 25 individuals. The award was first presented to film distributor and producer T.E. Vasudevan in 1992. Actress Aranmula Ponnamma is the only woman who has received the honour, in 2005. The 2011 recipient, actor Jose Prakash, died before the award ceremony. His son accepted the award on his behalf. The most recent winner is lyricist, filmmaker and writer Sreekumaran Thampi, who was honoured at the 2017 Kerala State Film Awards ceremony.

Answer this question based on the passage: who has been chosen for the prestigious jc daniel award 2017?
A: Sreekumaran Thampi. How to explain the answer? The relevant information is: The most recent winner is lyricist, filmmaker and writer Sreekumaran Thampi, who was honoured at the 2017 Kerala State Film Awards ceremony.

Q: The Stone Age was a broad prehistoric period during which stone was widely used to make implements with an edge, a point, or a percussion surface. The period lasted roughly 3.4 million years and ended between 8700 BCE and 2000 BCE with the advent of metalworking.

Answer this question: in which history age was the use of stone started?
A:

Show your work and conclude with the exact phrasing "Therefore, the final answer is [answer]." where [answer] is just the final number or expression that solves the problem.
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The Stone Age. How to explain the answer? The relevant information is: The Stone Age was a broad prehistoric period during which stone was widely used to make implements with an edge, a point, or a percussion surface.