instruction:
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".
question:
New Legitimacy: Organized crime was soon to have a formidable adversary in its bid to control Las Vegascorporate cash. Though Las Vegas had developed a powerful local economy, few major outside investments were made in the city, due primarily to mob infiltration and its inherent ties to illegal activities. That would change dramatically with the 1966 arrival of billionaire Howard Hughes. A legitimate businessman, Hughes was nonetheless eccentric and dramatic, a style suited to the Las Vegas ethos. True to the myth, the reclusive Hughes immediately cloistered himself in the Desert Inn's penthouse. Several weeks later he was askedthen orderedto vacate the room to make room for high rollers, whereupon he promptly bought the property and fired the management. Thus began Hughes' legendary three-year, $300-million Las Vegas buying spree. When it was over, Hughes owned six casinos, an airport, and an airline, along with numerous plots of land stretching from the Strip to the mountains. Hughes' actions would have beneficial repercussions, both immediate and lasting. Because of the new legitimacy Las Vegas acquired from Hughes' investments, established companies such as Hilton Hotels bought into the gaming business, and their influence helped draw a line in the desert sand between legitimate operations and mob casinos, where illegal skimming of profits was rampant. That, combined with the formation of the Nevada Gaming Control Board, would signal the beginning of the end for heavy mob influence in the city. Las Vegas with a Vision As corporations moved in and the mob was slowly pushed out, a new Las Vegas emerged. The legitimization of gambling led to its increased legalization across the US. What was once a sure thing became much more competitive. Casino operators had to reassess the nature of their business. The first to really do so was Steve Wynn, a Las Vegas resident and owner of the Golden Nugget. In the mid-1980s, Wynn began plans to reinvigorate Las Vegas with a new resort. He bought several Strip propertiesthe Silver Slipper and Castaways among themand demolished them to make way for a new kind of resortMirage which became an instant success. <sep>What did Howard Hughes purchase during his Vegas buying spree?<sep>Six casinos, an airport, an airline, and a large tract of land
answer:
Yes

question:
When you get sick, your body springs to action. Your body starts to fight the illness. Thats why you want to eat right and get plenty of sleep. You need a strong immune system to fight off illness. Plants dont have an immune system. That does not mean they do not get sick. Plants are affected by disease just like us. Typically, their first line of defense is the death of part of the plant. This prevents the infection from spreading. Many plants also produce special chemicals to fight disease. For example, willow trees produce a chemical to kill the bacteria. The same compound is used in many acne products. You can see a picture of a willow tree in Figure Plants may be smarter than we think. No, they cannot talk to each other. They may be able to send messages, though. <sep>What do humans have that plants don't have?<sep>Immune systems
answer:
Yes

question:
Captured Moments by Will Shetterly I remember Papa's stopbox, a teal blue Tiempo Capturado that Mama brought home for his birthday. It was huge and inefficient, and she should never have spent so many pesos on a toy, but Papa would not let her return it. He used it to preserve baby tomatoes, cucumbers, and strawberries in translucent cubes that he stored in the pantry for spring-time meals in the middle of winter. Mama kept her mink jacket, a family hand-me-down, safe from time in a stopbox, and lent the capturador to my uncle for his stamp collection. Sometimes they would let us little ones to seal a treasured toy or a last piece of birthday cake until we begged them for its release, usually a few hours after enclosing it. When my father died, a year after my mother, my sisters and I cleaned out their apartment. We found our baby shoes protected in stopboxes. I took mine home, where they sat above my computer while I worked on my first play. One night when I did not believe love had ever existed for anyone, I used my own capturador, a sleek titanium Sanyo Tardar Ahora, to undo the stopbox. Bringing my face close to the shoes, I breathed deeply of air that my parents had trapped while closing up that symbol of their love for me. The instant would have been improved had my baby shoes been cleaned before they were encased. But as soon as I coughed, I laughed, and I did not try to kill myself that night. <sep>What reason did the author give for coughing after breathing in the air from the stopbox the baby shoes were stored in?<sep>Warhead
answer:
No