Problem: Brad, Texas (CNN) -- Authorities were working on plans Friday for residents who were forced to flee a wildfire in northern Texas to return home, a day after firefighters made progress battling the blaze that destroyed dozens of homes. The blaze in Palo Pinto County scorched 6,200 acres by Thursday, according to the Texas Forest Service. The fire is burning near the resort of Possum Kingdom Lake, near the town of Brad, about 100 miles west of Dallas. "We feel much better about this fire today," as the blaze is now 50% contained, said John Nichols, a spokesman for the Forest Service. He said evacuations were lifted for some residents forced to evacuate the fire, which was driven by high temperatures and dry winds. The wildfire has destroyed 40 homes and nine RVs since it began Tuesday, the Forest Service said Thursday. Firefighters were receiving support from aerial tankers and helicopters. Authorities are mapping out plans to allow residents to return to their homes, said Palo Pinto County Sheriff Ira Mercer. Authorities also are trying to open the lake for the Labor Day holiday, he said. On Wednesday, evacuations were ordered in several communities on the north side of the lake after the fire charged over a ridge and approached a dam on the lake, CNN affiliate WFAA reported. The wildfire was moving so fast that the Forest Service pulled out of its command observation post, telling journalists and onlookers to get out of the way of the fire. "My house is right through here, though it may be gone," Tom Hardeston told WFAA as he watched the fire. Nearby ranchers battled to save their herds from the encroaching fire. "I'm just moving them from pasture to pasture," Cindi McCoy told WFAA, referring to her livestock. "As one pasture burns, I'm moving them back to that one and bring(ing) them back around."

Question: "How many days has the fire been active?"

Answer: "Two"
Answer: no

Problem: Sound waves are mechanical waves. They can travel only through matter. They cannot travel through empty space. This was demonstrated in the 1600s by a scientist named Robert Boyle. Boyle placed a ticking clock in a sealed glass jar. The clock could be heard ticking through the air and glass of the jar. Then Boyle pumped the air out of the jar. The clock was still running, but the ticking could not be heard. Thats because the sound couldnt travel without air particles to transfer the sound energy. Is there any other place where sound cannot be heard? Here is a hint: is there any other place that does not have air molecules? Thats right, in space sound cannot be transferred. So can astronauts hear each other? Yes, they can, because they are in enclosed space stations or pressurized suits.In both cases, they are surrounded by air molecules. If they left their space ship and did not use their electronics, they would not be able to hear each other. Next time you watch a science fiction movie, think about this factoid. When spaceships are destroyed by hostile alien beings, there would be no sound heard. Sound waves can travel through many kinds of matter.

Question: "In a science fiction movie when aliens destroy a spaceship why would there be no sound heard?"

Answer: "no air molecules in space"
Answer: yes

Problem: French and British Ties and Occupation: The daughter of Ferdinand and Isabella married the son and heir of the Holy Roman Emperor, Maximilian of Hapsburg. The Spanish crown duly passed to the Hapsburgs, and Spain remained in their hands until the feeble-minded Carlos II died in 1700, leaving no heir. France seized the chance to install the young grandson of Louis XIV on the Spanish throne. A rival Hapsburg claimant was supported by Austria and Britain, who saw a powerful Spanish-French alliance as a major threat. In the subsequent War of the Spanish Succession (17021713) most of the old kingdom of Aragon, including the Balearics, backed the Hapsburgs. Britain seized Gibraltarin the name of the Hapsburg claimantand retained it when the war was over. In 1708 Britain captured Menorca, and the magnificent harbor of Mahon (Mao), for the Royal Navy. England clung to it even when Bourbon forces captured Mallorca at the end of the war. Menorca changed hands between Britain, France, and Spain five more times in less than a century. Britain finally ceded the island to Spain in the year 1802, under the terms of the Treaty of Amiens. By 1805, Spain was once more aligned with France, and Spanish ships fought alongside the French against Nelson at Trafalgar. Napoleon came to distrust his Spanish ally and forcibly replaced the king of Spain with his own brother, Joseph Bonaparte. A French army marched in to subdue the country. The Spanish resisted and, aided by British troops commanded by the Duke of Wellington, drove the French out. What British historians call the Peninsular War (18081814) is known in Spain as the War of Independence. In the 19th century, practically all of Spain's possessions in the Americas broke away in the wake of the Napoleonic Wars, and the few that remained were lost at the end of the 19th century. The Balearics, further neglected, were beset with poverty and outbreaks of disease. However, toward the 20th century, things began to improve on the islands, with Mallorca reaping the rewards of successful agricultural crops and Menorca launching an export shoe industry.

Question: "In what century was the Balearics beset with poverty and outbreaks of disease?"

Answer: "20th"
Answer:
no