Question: The Spanish language is the second most spoken language in the United States. There are 45 million Hispanophones who speak Spanish as a first or second language in the United States, as well as six million Spanish language students. Together, this makes the United States of America the second largest Hispanophone country in the world after Mexico, and with the United States having more Spanish-speakers than Colombia and Spain (but fewer first language speakers). Spanish is the Romance language and the Indo-European language with the largest number of native speakers in the world. Roughly half of all American Spanish-speakers also speak English "very well," based on their self-assessment in the U.S. Census.
Try to answer this question if possible: What type of language is Spanish? 
Answer: unanswerable
Question: The core technology used in a videoconferencing system is digital compression of audio and video streams in real time. The hardware or software that performs compression is called a codec (coder/decoder). Compression rates of up to 1:500 can be achieved. The resulting digital stream of 1s and 0s is subdivided into labeled packets, which are then transmitted through a digital network of some kind (usually ISDN or IP). The use of audio modems in the transmission line allow for the use of POTS, or the Plain Old Telephone System, in some low-speed applications, such as videotelephony, because they convert the digital pulses to/from analog waves in the audio spectrum range.
Try to answer this question if possible: How high can audio modems go?
Answer: unanswerable
Question: According to the United States Census Bureau, the city has a total area of 127.5 square miles (330.2 km2), of which 109.0 square miles (282.2 km2) is land and 18.5 square miles (47.9 km2) is covered by water. The old city is located on a peninsula at the point where, as Charlestonians say, "The Ashley and the Cooper Rivers come together to form the Atlantic Ocean." The entire peninsula is very low, some is landfill material, and as such, frequently floods during heavy rains, storm surges, and unusually high tides. The city limits have expanded across the Ashley River from the peninsula, encompassing the majority of West Ashley as well as James Island and some of Johns Island. The city limits also have expanded across the Cooper River, encompassing Daniel Island and the Cainhoy area. North Charleston blocks any expansion up the peninsula, and Mount Pleasant occupies the land directly east of the Cooper River.
Try to answer this question if possible: How of Charleston's total area isn't dry land?
Answer: unanswerable
Question: Roman women were present at most festivals and cult observances. Some rituals specifically required the presence of women, but their active participation was limited. As a rule women did not perform animal sacrifice, the central rite of most major public ceremonies. In addition to the public priesthood of the Vestals, some cult practices were reserved for women only. The rites of the Bona Dea excluded men entirely. Because women enter the public record less frequently than men, their religious practices are less known, and even family cults were headed by the paterfamilias. A host of deities, however, are associated with motherhood. Juno, Diana, Lucina, and specialized divine attendants presided over the life-threatening act of giving birth and the perils of caring for a baby at a time when the infant mortality rate was as high as 40 percent.
Try to answer this question if possible: What was the amount of participation by women in religious observances?
Answer:
limited