Problem: Please answer a question about the following article about Solar energy:
The common features of passive solar architecture are orientation relative to the Sun, compact proportion (a low surface area to volume ratio), selective shading (overhangs) and thermal mass. When these features are tailored to the local climate and environment they can produce well-lit spaces that stay in a comfortable temperature range. Socrates' Megaron House is a classic example of passive solar design. The most recent approaches to solar design use computer modeling tying together solar lighting, heating and ventilation systems in an integrated solar design package. Active solar equipment such as pumps, fans and switchable windows can complement passive design and improve system performance.
What is produced when the features of passive solar architecture are customized to the environment?
A: well-lit spaces that stay in a comfortable temperature range
Problem: Please answer a question about the following article about Alexander Graham Bell:
The bel (B) and the smaller decibel (dB) are units of measurement of sound intensity invented by Bell Labs and named after him. [N 28] Since 1976 the IEEE's Alexander Graham Bell Medal has been awarded to honor outstanding contributions in the field of telecommunications.
In what field is the Alexander Graham Bell Medal given out?
A: telecommunications
Problem: Please answer a question about the following article about Group (mathematics):
In many situations it is desirable to consider two group elements the same if they differ by an element of a given subgroup. For example, in D4 above, once a reflection is performed, the square never gets back to the r2 configuration by just applying the rotation operations (and no further reflections), i.e. the rotation operations are irrelevant to the question whether a reflection has been performed. Cosets are used to formalize this insight: a subgroup H defines left and right cosets, which can be thought of as translations of H by arbitrary group elements g. In symbolic terms, the left and right cosets of H containing g are
What should not be considered when asking if a reflection has been performed?
A: rotation operations
Problem: Please answer a question about the following article about Guinea-Bissau:
Luis Cabral, brother of Amilcar and co-founder of PAIGC, was appointed the first President of Guinea-Bissau. Following independence, the PAIGC killed thousands of local Guinean soldiers who had fought along with the Portuguese Army against guerrillas. Some escaped to settle in Portugal or other African nations. One of the massacres occurred in the town of Bissora. In 1980 the PAIGC acknowledged in its newspaper No Pintcha (dated 29 November 1980) that many Gueinean soldiers had been executed and buried in unmarked collective graves in the woods of Cumera, Portogole, and Mansaba.
When did the PAIGC acknowledge the executions?
A:
29 November 1980