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".

Crusaders, Mamelukes, and Turks: The Crusaders established a feudal Christian state with Godfrey at its head. They built many impressive churches during the term of the first Latin Kingdom of Jerusalem, but in 1187 they were driven out by Muslim forces under the great warrior Saladin. During the Sixth Crusade (1228 1229), the Holy Roman Emperor Frederick II managed to secure Jerusalem for the Christians by negotiation. The Christians, however, could not hold the city. After they lost Jerusalem, a Mongol invasion swept through, and in 1244 the Mameluke dynasty of Egypt took control, ruling Jerusalem for the next 250 years. The city struggled to rebuild from Crusader wars and invasions. Much of the best Islamic architecture in the city was constructed in the Mameluke era, but the past thousand years had taken their toll: Jerusalem was unable to regain the prosperity it had enjoyed in earlier times. In the early 16th century, the Ottoman Turkish Empire was advancing through the Middle East. Jerusalem fell to the Ottomans in 1517, remaining under their control for 400 years. Suleiman the Magnificent rebuilt the walls and gates in the form they retain to this day. Fountains, inns, religious schools, and barracks were constructed. But when Suleiman died, his empire, including Jerusalem, began a long period of decline. The Holy City remained a backwater until the 19th century, when renewed interest among Christian pilgrims made it the destination of thousands of travelers each year. <sep>What happened to Jerusalem after the Christians lost it?<sep>The Mameluke dynasty took control and struggled to rebuild it.
No

Do all plants live on the land? Some plants do live in the water. To do this, they have evolved special traits. Plants that live in water are called aquatic plants. Living in water has certain benefits. There is certainly plenty of water! The plant does not need special traits to absorb, transport, or conserve water. They do not need a large root system. They do not need a strong stem to hold up the plant. The plant uses the water for support. Dont think water plants have it easy, though. They also face challenges. Living in water isnt that easy. They do need some special traits to survive. It is tough for the plant to reproduce. Pollination by wind or animals cant happen under water. Sunlight cannot reach very far beneath the waters surface. Some aquatic plants have floating flowers and leaves. <sep>How is an aquatic plant held up?<sep>Roots
No

Static electricity is like a teeter-totter. What happens if a teeter-totter is balanced? Correct! It does not move. What about when its not balanced? Yes, it will now begin to move. Charges move when they are not balanced. Charges can build up by friction. Maybe you rub your feet on a wool mat or carpet. Rubber soled shoes readily gain charges. The wool carpet easily gives up charges. The two items become unbalanced. One item has a positive charge. The other has a negative charge. The difference in charge is called static electricity. Just like the teeter-totter, something is going to move. Positive charges build up on the mat. Negative charges build up on you. <sep>When static electricity is not balanced, what happens to the charges?<sep>There is no charge
No