Problem: Appalachian Mountains:

Dryer and rockier uplands and ridges are occupied by oak-chestnut type forests dominated by a variety of oaks (Quercus spp.), hickories (Carya spp.) and, in the past, by the American chestnut (Castanea dentata). The American chestnut was virtually eliminated as a canopy species by the introduced fungal chestnut blight (Cryphonectaria parasitica), but lives on as sapling-sized sprouts that originate from roots, which are not killed by the fungus. In present-day forest canopies chestnut has been largely replaced by oaks.

What trees are typically found in the dryer portions?
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A: oak


Problem: The Community Tool Box is a public service of the University maintained by the Work Group for Community Health and Development. It is a free, online resource that contains more than 7,000 pages of practical information for promoting community health and development, and is a global resource for both professionals and grassroots groups engaged in the work of community health and development.
How much content doesn't the Community Tool Box offer?
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Answer: unanswerable


Q: What is a question about this article? If the question is unanswerable, say "unanswerable".
Streets' names change from West to East (for instance, East 10th Street to West 10th Street) at Broadway below 8th Street, and at Fifth Avenue from 8th Street and above.
Do streets' names change from West to East or North to South?
A: West to East


Context and question: At the end of World War II Soviet troops occupied southern Sakhalin Island and the Kuril Islands, making them part of the RSFSR. The status of the southernmost Kurils remains in dispute with Japan.
What administrative division did Sakhalin Island not become a part of?
Answer: unanswerable


Question: Ogives are alternating wave crests and valleys that appear as dark and light bands of ice on glacier surfaces. They are linked to seasonal motion of glaciers; the width of one dark and one light band generally equals the annual movement of the glacier. Ogives are formed when ice from an icefall is severely broken up, increasing ablation surface area during summer. This creates a swale and space for snow accumulation in the winter, which in turn creates a ridge. Sometimes ogives consist only of undulations or color bands and are described as wave ogives or band ogives.
Is there an answer to this question: What do ogives prevent from accumulating?

Answer: unanswerable


Problem: Northwestern University:

Two annual productions are especially notable: the Waa-Mu show, and the Dolphin show. Waa-Mu is an original musical, written and produced almost entirely by students. Children's theater is represented on campus by Griffin's Tale and Purple Crayon Players. Its umbrella organization—the Student Theatre Coalition, or StuCo, organizes nine student theatre companies, multiple performance groups and more than sixty independent productions each year. Many Northwestern alumni have used these productions as stepping stones to successful television and film careers. Chicago's Lookingglass Theatre Company, for example, which began life in the Great Room in Jones Residential College, was founded in 1988 by several alumni, including David Schwimmer; in 2011, it won the Regional Tony Award.

Who is the Waa-Muu show primarily written and produced by?
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A:
students