Problem: Exhibition game:

An exhibition game may also be used to settle a challenge, to provide professional entertainment, to promote the sport, or to raise money for charities. Several sports leagues hold all-star games to showcase their best players against each other, while other exhibitions games may pit participants from two different leagues or countries to unofficially determine who would be the best in the world. International competitions like the Olympic Games may also hold exhibition games as part of a demonstration sport.

What type of exhibition game showcases average players?
---
A: unanswerable


Problem: Lamps designed for different voltages have different luminous efficacy. For example, a 100-watt, 120-volt lamp will produce about 17.1 lumens per watt. A lamp with the same rated lifetime but designed for 230 V would produce only around 12.8 lumens per watt, and a similar lamp designed for 30 volts (train lighting) would produce as much as 19.8 lumens per watt. Lower voltage lamps have a thicker filament, for the same power rating. They can run hotter for the same lifetime before the filament evaporates.
How does filament size relate to voltage level?
---
Answer: Lower voltage lamps have a thicker filament


Q: What is a question about this article? If the question is unanswerable, say "unanswerable".
Chengdu Economic and Technological Development Zone (Chinese: 成都经济技术开发区; pinyin: Chéngdū jīngjì jìshù kāifā qū) was approved as state-level development zone in February 2000. The zone now has a developed area of 10.25 km2 (3.96 sq mi) and has a planned area of 26 km2 (10 sq mi). Chengdu Economic and Technological Development Zone (CETDZ) lies 13.6 km (8.5 mi) east of Chengdu, the capital city of Sichuan Province and the hub of transportation and communication in southwest China. The zone has attracted investors and developers from more than 20 countries to carry out their projects there. Industries encouraged in the zone include mechanical, electronic, new building materials, medicine and food processing.
How far east of Chengdu is the planned food processing area?
A: unanswerable


Context and question: The Yale Provost's Office has launched several women into prominent university presidencies. In 1977 Hanna Holborn Gray was appointed acting President of Yale from this position, and went on to become President of the University of Chicago, the first woman to be full president of a major university. In 1994 Yale Provost Judith Rodin became the first female president of an Ivy League institution at the University of Pennsylvania. In 2002 Provost Alison Richard became the Vice Chancellor of the University of Cambridge. In 2004, Provost Susan Hockfield became the President of the Massachusetts Institute of Technology. In 2007 Deputy Provost Kim Bottomly was named President of Wellesley College. In 2003, the Dean of the Divinity School, Rebecca Chopp, was appointed president of Colgate University and now heads Swarthmore College.
In what year did Susan Hockfield become President of IMT?
Answer: unanswerable


Question: This may be managed directly on an individual basis, or by the assignment of individuals and privileges to groups, or (in the most elaborate models) through the assignment of individuals and groups to roles which are then granted entitlements. Data security prevents unauthorized users from viewing or updating the database. Using passwords, users are allowed access to the entire database or subsets of it called "subschemas". For example, an employee database can contain all the data about an individual employee, but one group of users may be authorized to view only payroll data, while others are allowed access to only work history and medical data. If the DBMS provides a way to interactively enter and update the database, as well as interrogate it, this capability allows for managing personal databases.
Is there an answer to this question: What does data security avoid?

Answer: unauthorized users from viewing or updating the database


Problem: Symbiosis:

Another non-obligate symbiosis is known from encrusting bryozoans and hermit crabs that live in a close relationship. The bryozoan colony (Acanthodesia commensale) develops a cirumrotatory growth and offers the crab (Pseudopagurus granulimanus) a helicospiral-tubular extension of its living chamber that initially was situated within a gastropod shell.

What species of crab has a helicospiral-tubular extension of its living chamber?
---
A:
unanswerable