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:
An atom is the very smallest particle that still the elements properties. All the atoms of an element are alike. They are also different from the atoms of all other elements. For example, atoms of gold are always the same. It does not matter if they are found in a gold nugget or a gold ring. All gold atoms have the same structure and properties. For example, all gold atoms contain 79 protons. One of golds unique properties is that it is a great conductor of electricity. Gold is a better conductor of electricity than copper. Gold is more rare and expensive than copper. Copper is used in house wiring. Gold is far too expensive. <sep>Are two atoms of different elements the same?<sep>No, atoms of a single element are alike and differ from other elements

Ex Output:
Yes


Ex Input:
Fossils give clues about major geological events. Fossils can also give clues about past climates. Fossils of ocean animals on the top of a mountain? Ocean animals have been found on the Earths tallest mountain. Its hard to believe, but it is true. These fossils were found at the top of Mt. Everest. Mt. Everest is the highest mountain on Earth. These fossils showed that this entire area was once at the bottom of a sea. It can only mean that Mt. Everest was uplifted. In fact, the entire Himalaya mountain range was raised. It was forced up from the collision of two continents. Fossils of plants are found in Antarctica. Now, Antarctica is almost completely covered with ice. Plants do not grow in Antarctica. According to fossils, they once did. This means that Antarctica was once much warmer than it is now. These fossils tell us about Antarcticas past climate. <sep>How do we know that Antarctica used to be warm?<sep>Plants can't live in Antartica

Ex Output:
No


Ex Input:
 We were cornered in a sort of way already.  But these butchers up the cavern had been surprised, they were probably scared, and they had no special weapons, only those little hatchets of theirs.  And that way lay escape.  Their sturdy little forms--ever so much shorter and thicker than the mooncalf herds--were scattered up the slope in a way that was eloquent of indecision.  I had the moral advantage of a mad bull in a street.  But for all that, there seemed a tremendous crowd of them.  Very probably there was.  Those Selenites down the cleft had certainly some infernally long spears.  It might be they had other surprises for us.... But, confound it!  if we charged up the cave we should let them up behind us, and if we didn't those little brutes up the cave would probably get reinforced.  Heaven alone knew what tremendous engines of warfare--guns, bombs, terrestrial torpedoes--this unknown world below our feet, this vaster world of which we had only pricked the outer cuticle, might not presently send up to our destruction.  It became clear the only thing to do was to charge!  It became clearer as the legs of a number of fresh Selenites appeared running down the cavern towards us. <sep>What stood in the way of the speaker and their escape?<sep>The Selenites

Ex Output:

Yes


