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".
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Question: In Colombia, the drug-financed guerrillas trying to seize the country and destroy democracy include M-19, which Castro has clearly backed. Robert Merkel, a former U.S. attorney handling drug indictments in Florida, doesn't think for a minute that Castro's much publicized trials of high officials engaged in the drug trade mean he has broken off with the Medellin drug cartel. "If the cartel succeeds in blackmailing the Colombian authorities into negotiations, the cartel will be in control and Fidel can exploit his past relationships with them," he told the Journal's David Asman recently. The struggle against the drug lords in Colombia will be a near thing. This week, the government arrested Jose Abello Silva, said to be the fourth-ranking cartel leader. He will probably be extradited to the U.S. for trial under an extradition treaty President Virgilia Barco has revived. Later, another high-ranking trafficker, Leonidas Vargas, was arrested and 1,000 pounds of dynamite seized. Mr. Barco has refused U.S. troops or advisers but has accepted U.S. military aid. President Bush has agreed to meet within 90 days with Mr. Barco, President Alan Garcia of Peru and President Jaime Paz Zamora of Bolivia to discuss the drug problem. It might not be a bad idea to do that sooner, rather than later. After the Panama fiasco, they will need some reassurance. Certainly, the Colombian press is much in need of that. <sep>Who is going to be extradited to the U.S?<sep>Alan Garcia

Answer: No

Question: On December 4, as news came in about the discoveries in Jordan, National Security Council (NSC) Counterterrorism Coordinator Richard Clarke wrote Berger, "If George's [Tenet's] story about a planned series of UBL attacks at the Millennium is true, we will need to make some decisions NOW." He told us he held several conversations with President Clinton during the crisis. He suggested threatening reprisals against the Taliban in Afghanistan in the event of any attacks on U.S. interests, anywhere, by Bin Laden. He further proposed to Berger that a strike be made during the last week of 1999 against al Qaeda camps in Afghanistan-a proposal not adopted. Warned by the CIA that the disrupted Jordanian plot was probably part of a larger series of attacks intended for the millennium, some possibly involving chemical weapons, the Principals Committee met on the night of December 8 and decided to task Clarke's Counterterrorism Security Group (CSG) to develop plans to deter and disrupt al Qaeda plots. Michael Sheehan, the State Department member of the CSG, communicated warnings to the Taliban that they would be held responsible for future al Qaeda attacks." Mike was not diplomatic," Clarke reported to Berger. With virtually no evidence of a Taliban response, a new approach was made to Pakistan. 13 General Anthony Zinni, the commander of Central Command (CENTCOM), was designated as the President's special envoy and sent to ask General Musharraf to "take whatever action you deem necessary to resolve the Bin Laden problem at the earliest possible time." But Zinni came back emptyhanded. As Ambassador William Milam reported from Islamabad, Musharraf was "unwilling to take the political heat at home." The CIA worked hard with foreign security services to detain or at least keep an eye on suspected Bin Laden associates. Tenet spoke to 20 of his foreign counterparts. Disruption and arrest operations were mounted against terrorists in eight countries. In mid-December, President Clinton signed a Memorandum of Notification (MON) giving the CIA broader authority to use foreign proxies to detain Bin Laden lieutenants, without having to transfer them to U.S. custody. The authority was to capture, not kill, though lethal force might be used if necessary.16Tenet would later send a message to all CIA personnel overseas, saying, "The threat could not be more real. <sep>When do the events in the whole article take place?<sep>Late 1999

Answer: Yes

Question: Plants also detect the daily cycle of light and darkness. Do you know how plants respond to these changes? Some plants open their leaves during the day. It is during these hours the plant can collect sunlight. At night, the plant closes its leaves to prevent water loss. Many plants respond to the change in the length of the day. As days grow shorter, some plants respond by going dormant. Dormant is when a plant suspends its growth. It does this in order to survive. Shorter days signal the coming of winter. Winter in most areas means extreme cold. It is also very dry in the winter months. As winter approaches, some plants respond by their leaves changing color. After the change in color, they fall off. This dormancy period helps trees. It allows them to survive the cold and dry winter. Plants only want to grow when conditions are right. <sep>Why might a plant open its leaves during the day?<sep>So that it can gather more light

Answer:
Yes