Some random thoughts: The relevant information is: Castellanos is a Spanish habitational surname with the meaning "(from a place founded or inhabited by) Castilians".
Generated quizz based on thoughtsQ: Castellanos is a Spanish habitational surname with the meaning "(from a place founded or inhabited by) Castilians". Notable people with the surname include:

Answer this question based on the passage: where does the last name castellanos originate from?
A: Spanish

Some random thoughts: To answer this question, we should know that: They are usually made from large trees, mostly western red cedar, by indigenous peoples of the Pacific Northwest coast of North America (Washington, Oregon, and Canada's western province, British Columbia).
Generated quizz based on thoughtsQ: Totem poles are monumental carvings, a type of Northwest Coast art, consisting of poles, posts or pillars, carved with symbols or figures. They are usually made from large trees, mostly western red cedar, by indigenous peoples of the Pacific Northwest coast of North America (Washington, Oregon, and Canada's western province, British Columbia). The word totem derives from the Algonquian (most likely Ojibwe) word o doodem (oˈtuːtɛm), "(his) kinship group". The carvings may symbolize or commemorate cultural beliefs that recount familiar legends, clan lineages, or notable events. The poles may also serve as functional architectural features, welcome signs for village visitors, mortuary vessels for the remains of deceased ancestors, or as a means to publicly ridicule someone. They may embody a historical narrative of significance to the people carving and installing the pole. Given the complexity and symbolic meanings of totem pole carvings, their placement and importance lies in the observer's knowledge and connection to the meanings of the figures and the culture in which they are embedded.

In what region of the united states were totem poles common forms of native american art?
A: the Pacific Northwest coast of North America ( Washington , Oregon , and Canada 's western province , British Columbia )

Some random thoughts: The relevant sentence in the passage is: It is about 180 km (110 mi) east southeast of Seoul, the capital of South Korea, and connected by expressways and high-speed passenger railways.
Generated quizz based on thoughtsQ: Pyeongchang (Korean pronunciation: ( phjʌŋtɕhaŋ); in full, Pyeongchang-gun (phjʌŋtɕhaŋɡun); English: / ˌpjʌŋˈtʃɑːŋ / ) is a county in the province of Gangwon-do, South Korea, located in the Taebaek Mountains region. It is home to several Buddhist temples, including Woljeongsa. It is about 180 km (110 mi) east southeast of Seoul, the capital of South Korea, and connected by expressways and high-speed passenger railways. Pyeongchang's slogan, "Happy 700 Pyeongchang", is taken from its average elevation of approximately 700 metres (2,300 ft).

Where on the map is pyeongchang south korea?
A: about 180 km ( 110 mi ) east southeast of Seoul , the capital of South Korea

Some random thoughts: The relevant sentence in the passage is: Vinegar is a liquid consisting of about 5 -- 20 % acetic acid (CH COOH), water, and other trace chemicals, which may include flavorings.
Generated quizz based on thoughts

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.
user
Q: Context: Vinegar is a liquid consisting of about 5 -- 20 % acetic acid (CH COOH), water, and other trace chemicals, which may include flavorings. The acetic acid is produced by the fermentation of ethanol by acetic acid bacteria. Vinegar is now mainly used as a cooking ingredient, or in pickling. As the most easily manufactured mild acid, it has historically had a great variety of industrial, medical, and domestic uses, some of which (such as its use as a general household cleaner) are still commonly practiced today.

Question: what is the percentage of acetic acid in vinegar?
A: 5 -- 20 %