In this task, you will be presented with a context passage, a question about that paragraph, and a possible answer to that question. The task is to check the validity of the answer. Answer with "Yes" or "No".

Ex Input:
Alexander earned the epithet "The Great" due to his unparalleled success as a military commander. He never lost a battle, despite typically being outnumbered. This was due to use of terrain, phalanx and cavalry tactics, bold strategy, and the fierce loyalty of his troops. The Macedonian phalanx, armed with the sarissa, a spear 6 metres (20 ft) long, had been developed and perfected by Philip II through rigorous training, and Alexander used its speed and maneuverability to great effect against larger but more disparate Persian forces. Alexander also recognized the potential for disunity among his diverse army, which employed various languages and weapons. He overcame this by being personally involved in battle, in the manner of a Macedonian king. In his first battle in Asia, at Granicus, Alexander used only a small part of his forces, perhaps 13,000 infantry with 5,000 cavalry, against a much larger Persian force of 40,000. Alexander placed the phalanx at the center and cavalry and archers on the wings, so that his line matched the length of the Persian cavalry line, about 3 km (1.86 mi). By contrast, the Persian infantry was stationed behind its cavalry. This ensured that Alexander would not be outflanked, while his phalanx, armed with long pikes, had a considerable advantage over the Persian's scimitars and javelins. Macedonian losses were negligible compared to those of the Persians. At Issus in 333 BC, his first confrontation with Darius, he used the same deployment, and again the central phalanx pushed through. Alexander personally led the charge in the center, routing the opposing army. At the decisive encounter with Darius at Gaugamela, Darius equipped his chariots with scythes on the wheels to break up the phalanx and equipped his cavalry with pikes. Alexander arranged a double phalanx, with the center advancing at an angle, parting when the chariots bore down and then reforming. The advance was successful and broke Darius' center, causing the latter to flee once again. When faced with opponents who used unfamiliar fighting techniques, such as in Central Asia and India, Alexander adapted his forces to his opponents' style. Thus, in Bactria and Sogdiana, Alexander successfully used his javelin throwers and archers to prevent outflanking movements, while massing his cavalry at the center. <sep>How did Alexander use the phalanx in the battle of Granicus?<sep>Armed with the sarissa

Ex Output:
No


Ex Input:
Surely, you have noticed the tall poles along the roadside. Do you know what is on top of those poles? Thats right, wires that carry electric current. These wires carry electric current to your home. But what is electric current? Electric current is actually the flow of electrons. You may recall, an electron is the outer-most particle in an atom. They have a negative charge. Electricity is the continuous flow of these particles. Electrons are able to move through wires. Their speed can even be measured. The SI unit for electric current (or speed) is the ampere (A). Ampere is often shortened to amp. Electric current may flow in just one direction, or it may keep reversing direction. Direct current (DC) flows in only one direction. Direct current is what is used in devices like flashlights. Alternating current (AC) flows in two directions. This is the type of current that flows into your home through wires. <sep>What is on top of the poles on the roadside?<sep>Wires carrying electric current

Ex Output:
Yes


Ex Input:
Five independent Salt Lake organizations that provide legal services to the poor, ethnic minorities, seniors and people with disabilities have joined together to acquire a west-side downtown building where they will have their offices. The new Community Legal Center at 205 N. 400 West is a project of "And Justice for All," which, until this venture, has been a joint fund-raising campaign by an alliance of the non-profit providers of free legal services. "And Justice for All," which solicits donations primarily from Utah lawyers and foundations, was the first joint fund-raising campaign of legal services agencies in the country, and the Community Legal Center is the first joint office project of public service law groups. The Legal Aid Society of Salt Lake, the Disability Law Center, the Multi-Cultural Legal Center, the Senior Lawyer Volunteer Project and Utah Legal Services will share the new facility, and last Wednesday their board members were given a tour of the Community Legal Center hosted by staff members of the five agencies. All of the agencies can share the same reception area and client waiting room. The building is close in, across the street from West High and two blocks from the Gateway. It has its own parking, something that's hard to find downtown and which has been a problem for staff as well as clients. Owning and sharing the building and not paying rent times five will save the non-profit agencies about $375,000 each year. My assistant, Charity Christenson, pointed out that the shared facility will also be efficient for those needing legal services. No longer will a woman desperate for a protective order, for example, have to run all over town trying to find the right agency. After the tour, we found Jaye Olafson at the cookies and brownies reception on the first floor. Jaye and her husband, Erik, own Tomax Technologies and were the sellers of the building. Jaye explained how much of the renovation had been merely uncovering what was already there. The hardwood floors, wooden ceilings and brick and stone interior walls were all hidden behind coverings and old paint. She loves the building, and they only moved out because the business had outgrown the space. So they renovated the old Sweet Candy Company building for Tomax. The Olafsons are delighted with the new owners. The building had been like home, she explained, and so it was important who would be living there. <sep>Who were the previous owners of the building who moved out due to their business needing more space?<sep>Sweet Candy Company

Ex Output:

No


