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:
So what is gravity? A typical definition of gravity is that it is a force. It causes an attraction between two masses. According to this definition, anything that has mass exerts a force. Any object exerts gravity on other objects. It does not matter how small it is, it has gravity. The more matter an object has, the more gravity it has. Your pencil has a tiny bit of gravity, but far too little to notice. What about a planet? It would have a lot of gravity. An objects gravity exerts a pull on other objects. Friction only occurs between objects that are touching. Gravity can act between objects that are not touching. In fact, gravity can act over very long distances. Where else can you feel gravity? <sep>How do objects interact under gravity?<sep>gravity causes an attraction between two masses

Ex Output:
Yes

Ex 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

Ex Output:
Yes

Ex Input:
The Romans: Legend says Rome was founded by Romulus, sired with twin brother Remus by Mars of a Vestal Virgin and abandoned on the Palatine Hill to be suckled by a she-wolf. Historians agree with the mythmakers that the site and traditional founding date of 753 b.c. are just about right. Under Etruscan domination, Rome had been a monarchy until a revolt in 510 b.c. established a patrician republic, which lasted five centuries. In contrast to other Italian cities weakened by internal rivalries and unstable government, Rome drew strength from a solid aristocracy of consuls and senate ruling over plebeians proud of their Roman citizenship and only rarely rebellious. Recovering quickly from the Gallic invasion of 390 b.c. , the Romans took effective control of the peninsula by a military conquest reinforced by a network of roads with names that exist to this day: Via Appia, Flaminia, Aurelia. All roads did indeed lead toand fromRome. By 250 b.c. , the city's population had grown to an impressive 100,000. Roman power extended throughout the Mediterranean with a victory in the Punic Wars against Carthage (now Tunisia) and conquests in Macedonia, Asia Minor, Spain, and southern France. The rest of Italy participated only by tax contributions to the war effort and minor involvement in commerce and colonization. Resentment surfaced when former Etruscan or Greek cities such as Capua, Syracuse, and Taranto supported Hannibal's invasion in 218 b.c. Rome followed up defeat of the Carthaginians with large-scale massacres and enslavement of their Italian supporters. The Third and final Punic War ended in 149 b.c. , though national solidarity was still a long way off. Under Julius Caesar, elected in 59 b.c. <sep>When did the Romans take control of the peninsula?<sep>750 b.c

Ex Output:
No