Problem: Please answer a question about the following article about Wood:
Certain types of musical instruments, such as those of the violin family, the guitar, the clarinet and recorder, the xylophone, and the marimba, are traditionally made mostly or entirely of wood. The choice of wood may make a significant difference to the tone and resonant qualities of the instrument, and tonewoods have widely differing properties, ranging from the hard and dense african blackwood (used for the bodies of clarinets) to the light but resonant European spruce (Picea abies), which is traditionally used for the soundboards of violins. The most valuable tonewoods, such as the ripple sycamore (Acer pseudoplatanus), used for the backs of violins, combine acoustic properties with decorative color and grain which enhance the appearance of the finished instrument.
What expensive wood with a prized color is used to make the backs of violins?
A: ripple sycamore
Problem: Please answer a question about the following article about PlayStation 3:
In September 2012 at the Tokyo Game Show, Sony announced that a new, slimmer PS3 redesign (CECH-4000) was due for release in late 2012 and that it would be available with either a 250 GB or 500 GB hard drive. Three versions Super Slim model were revealed: one with a 500 GB hard drive, a second with a 250 GB hard drive which is not available in PAL regions, and a third with a 12 GB flash storage that was only available in PAL regions. The storage of 12 GB model is upgradable with an official standalone 250 GB hard drive. A vertical stand was also released for the model. In the United Kingdom, the 500 GB model was released on September 28, 2012; and the 12 GB model was released on October 12, 2012. In the United States, the PS3 Super Slim was first released as a bundled console. The 250 GB was model was bundled with Game of the Year edition of Uncharted 3: Drake's Deception and released on September 25, 2012; and the 500 GB model was bundled with Assassin's Creed III and released on October 30, 2012. In Japan, the black colored Super Slim model was released on October 4, 2012; and the white colored Super Slim model was released on November 22, 2012. The Super Slim model is 20 percent smaller and 25 percent lighter than the Slim model and features a manual sliding disc cover instead of a motorized slot-loading disc cover of the Slim model. The white colored Super Slim model was released in the United States on January 27, 2013 as part of the Instant Game Collection Bundle. The Garnet Red and Azurite Blue colored models were launched in Japan on February 28, 2013. The Garnet Red version was released in North America on March 12, 2013 as part of the God of War: Ascension bundle with 500 GB storage and contained God of War: Ascension as well as the God of War Saga. The Azurite Blue model was released as a GameStop exclusive with 250GB storage.
What size was the largest hard drive available on the Super Slim PS3?
A: 500 GB
Problem: Please answer a question about the following article about History of science:
Subsequently, Plato and Aristotle produced the first systematic discussions of natural philosophy, which did much to shape later investigations of nature. Their development of deductive reasoning was of particular importance and usefulness to later scientific inquiry. Plato founded the Platonic Academy in 387 BC, whose motto was "Let none unversed in geometry enter here", and turned out many notable philosophers. Plato's student Aristotle introduced empiricism and the notion that universal truths can be arrived at via observation and induction, thereby laying the foundations of the scientific method. Aristotle also produced many biological writings that were empirical in nature, focusing on biological causation and the diversity of life. He made countless observations of nature, especially the habits and attributes of plants and animals in the world around him, classified more than 540 animal species, and dissected at least 50. Aristotle's writings profoundly influenced subsequent Islamic and European scholarship, though they were eventually superseded in the Scientific Revolution.
Plato and Aristotle are known for systematically discussing what?
A: natural philosophy
Problem: Please answer a question about the following article about Mosaic:
In the Iconoclastic era, figural mosaics were also condemned as idolatry. The Iconoclastic churches were embellished with plain gold mosaics with only one great cross in the apse like the Hagia Irene in Constantinople (after 740). There were similar crosses in the apses of the Hagia Sophia Church in Thessaloniki and in the Church of the Dormition in Nicaea. The crosses were substituted with the image of the Theotokos in both churches after the victory of the Iconodules (787797 and in 8th9th centuries respectively, the Dormition church was totally destroyed in 1922).
When did the Hagia Irene adapt the iconoclastic era mosaics?
A:
after 740