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".

Example Input: Gravity is a force, but not like other forces you may know. Gravity is a bit special. You know that a force is a push or pull. If you push a ball, it starts to roll. If you lift a book, it moves upward. Now, imagine you drop a ball. It falls to the ground. Can you see the force pulling it down? That is what makes gravity really cool. It is invisible. Invisible means you cannot see it. But wait, it has even more surprises. Gravity holds planets in place around the Sun. Gravity keeps the Moon from flying off into space. Gravity exerts a force on objects that are not even touching. In fact, gravity can act over very large distances. However, the force does get weaker the farther apart the objects are. <sep>How does gravity work on far away objects?<sep>Gets weaker the farther apart objects are
Example Output: Yes

Example Input: Heat supplies the energy that causes motion. The deeper you go into toward the Earths core, the hotter it gets. At the core it is really hot. All that heat tries to rise toward the surface. In the Mantle, the rock is partially melted and is able to move. As it is heated, the material in the mantle moves toward the surface. As the mantle material rises, it cools. When it reaches the Earths crust, it is mostly stopped. A little of the material can break through the surface, but not all. Instead, it begins to move horizontally. The mantle material moves horizontally away from a mid-ocean ridge crest. Toward the surface, the mantle material starts to cool. As it cools it sinks back down into the mantle. These areas are where deep sea trench occur. The material sinks back down to the core. The system operates like a giant conveyor belt. The motion due to heating and cooling is called convection. <sep>Where do sea trenches occur?<sep>Surface
Example Output: No

Example Input: These contradictory orders, and even letters of recall, reached Law on his march, but though he sent back M. Sinfray with letters to M. Bugros and Coja Wajid--which the latter afterwards made over to Clive--he continued his march to Patna, where he arrived on the 3rd of June, and was well received by Raja Ramnarain, and where he was within four or five days' march or sail from Sooty, the mouth of the Murshidabad or Cossimbazar river, and therefore in a position to join the Nawab whenever it might be necessary. In the mean time fate had avenged Law on one of his lesser enemies. This was that Ranjit Rai, who had insulted him during his interview with the Seths. The latter had pursued their old policy of inciting the English to make extravagant demands which they at the same time urged the Nawab to refuse. To justify one such demand, the English produced a letter in the handwriting of Ranjit Rai, purporting to be written at the dictation of the Seths under instructions from the Nawab. The latter denied the instructions, and the Seths promptly asserted that the whole letter was a forgery of their agent's. <sep>Who wrote the letter?<sep>It was forged
Example Output:
No