Context: Flour is a powder made by grinding raw grains or roots and used to make many different foods. Cereal flour is the main ingredient of bread, which is a staple food for many cultures, making the availability of adequate supplies of flour a major economic and political issue at various times throughout history. Wheat flour is one of the most important ingredients in Oceanic, European, South American, North American, Middle Eastern, North Indian and North African cultures, and is the defining ingredient in their styles of breads and pastries., GRAIN (initially the International Coalition for Development Action or ICDA) is a small international non-profit organisation that works to support small farmers and social movements in their struggles for community-controlled and biodiversity-based food systems., Dough is a thick, malleable, sometimes elastic, paste made out of any grains, leguminous or chestnut crops. Dough is typically made by mixing flour with a small amount of water and/or other liquid, and sometimes includes yeast or other leavening agents as well as other ingredients such as various fats or flavorings., The chestnut group is a genus (Castanea) of eight or nine species of deciduous trees and shrubs in the beech family Fagaceae, native to temperate regions of the Northern Hemisphere., Noodles are a staple food in many cultures made from unleavened dough which is stretched , extruded , or rolled flat and cut into one of a variety of shapes . A single noodle can be made , eaten , or extracted from a serving of noodles , but it is far more common to serve and eat many at once , and thus more common to see the plural form of the word . While long , thin strips may be the most common , many varieties of noodles are cut into waves , helices , tubes , strings , or shells , or folded over , or cut into other shapes . Noodles are usually cooked in boiling water , sometimes with cooking oil or salt added . They are often pan-fried or deep - fried . Noodles are often served with an accompanying sauce or in a soup . Noodles can be refrigerated for short - term storage , or dried and stored for future use . The material composition or geocultural origin must be specified when discussing noodles . The word derives from the German word Nudel . The oldest evidence of noodle consumption , from 4,000 years ago , has been found in China ., Fat is one of the three main macronutrients, along with carbohydrate and protein. Fats, also known as triglycerides, are esters of three fatty acid chains and the alcohol glycerol., A leaven , often called a leavening agent (and also known as a raising agent), is any one of a number of substances used in doughs and batters that cause a foaming action (gas bubbles) that lightens and softens. An alternative or supplement to leavening agents is a mechanical action by which air is incorporated. Leavening agents can be biological or synthetic chemical compounds. The gas produced is often carbon dioxide, or occasionally hydrogen, or another. , Subject: noodle, Relation: has_part, Options: (A) a (B) air (C) carbon (D) castanea (E) cereal (F) dough (G) fat (H) flour (I) group (J) history (K) hydrogen (L) leavening agent (M) liquid (N) protein (O) water (P) wheat flour (Q) yeast
Output: leavening agent