Input: Read this: Most hunter-gatherers are nomadic or semi-nomadic and live in temporary settlements. Mobile communities typically construct shelters using impermanent building materials, or they may use natural rock shelters, where they are available.
Question: What communities use natural wood shelters?

Output: unanswerable


QUES: Glacial bodies larger than 50,000 km2 (19,000 sq mi) are called ice sheets or continental glaciers. Several kilometers deep, they obscure the underlying topography. Only nunataks protrude from their surfaces. The only extant ice sheets are the two that cover most of Antarctica and Greenland. They contain vast quantities of fresh water, enough that if both melted, global sea levels would rise by over 70 m (230 ft). Portions of an ice sheet or cap that extend into water are called ice shelves; they tend to be thin with limited slopes and reduced velocities. Narrow, fast-moving sections of an ice sheet are called ice streams. In Antarctica, many ice streams drain into large ice shelves. Some drain directly into the sea, often with an ice tongue, like Mertz Glacier.

What are ice sheets that cover the sea called?
What is the answer?
ANS: unanswerable


QUES: In the context of cultural studies, the idea of a text includes not only written language, but also films, photographs, fashion or hairstyles: the texts of cultural studies comprise all the meaningful artifacts of culture.[citation needed] Similarly, the discipline widens the concept of "culture". "Culture" for a cultural-studies researcher not only includes traditional high culture (the culture of ruling social groups) and popular culture, but also everyday meanings and practices. The last two, in fact, have become the main focus of cultural studies. A further and recent approach is comparative cultural studies, based on the disciplines of comparative literature and cultural studies.[citation needed]
What has never been studied by researchers?

ANS: unanswerable


In the United States, the Environmental Protection Agency (EPA) is responsible for regulating pesticides under the Federal Insecticide, Fungicide, and Rodenticide Act (FIFRA) and the Food Quality Protection Act (FQPA). Studies must be conducted to establish the conditions in which the material is safe to use and the effectiveness against the intended pest(s). The EPA regulates pesticides to ensure that these products do not pose adverse effects to humans or the environment. Pesticides produced before November 1984 continue to be reassessed in order to meet the current scientific and regulatory standards. All registered pesticides are reviewed every 15 years to ensure they meet the proper standards. During the registration process, a label is created. The label contains directions for proper use of the material in addition to safety restrictions. Based on acute toxicity, pesticides are assigned to a Toxicity Class.
If it is possible to answer this question, answer it for me (else, reply "unanswerable"): How many years did it take to pass the FIFRA act?
Ah, so.. unanswerable


Question: The Canadian Joint Operations Command is an operational element established in October 2012 with the merger of Canada Command, the Canadian Expeditionary Force Command and the Canadian Operational Support Command. The new command, created as a response to the cost-cutting measures in the 2012 federal budget, combines the resources, roles and responsibilities of the three former commands under a single headquarters.
Try to answer this question if possible:  What specifically didn't prompt this merger?
Answer: unanswerable


Problem: The school has many nationally and internationally acclaimed scholars in social security, health care, health disparities, communication, social and health policy, and individual and family development. Many of the faculty have training in both social work and public health. The school's current dean is Edward F. Lawlor. In addition to affiliation with the university-wide Institute of Public Health, Brown houses 12 research centers. The Brown School Library collects materials on many topics, with specific emphasis on: children, youth, and families; gerontology; health; mental health; social and economic development; family therapy; and management. The library maintains subscriptions to over 450 academic journals.
What topics of emphasis are contained in the Brown School Library collection?
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Answer:
children, youth, and families; gerontology; health; mental health; social and economic development; family therapy; and management.