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: Density is also an important physical property of matter. The concept of density combines what we know about an objects mass and volume. Density reflects how closely packed the particles of matter are. When particles are packed together more tightly, matter is more dense. Differences in density of matter explain many phenomena. It explains why helium balloons rise. It explains why currents such as the Gulf Stream flow through the oceans. It explains why some things float in or sink. You can see this in action by pouring vegetable oil into water. You can see a colorful demonstration in this video. <sep>What are some things density explains?<sep>It explains why some things float in or sink

Answer: Yes


Question: After becoming disabled in a machete attack on a visit to his native Haiti, Jean-Claude Joseph needed help persuading his landlord to move him from a fifth-floor apartment to one on the ground floor. Isaac Benjamin became ensnared in a bureaucratic snafu that took away his Social Security disability payments for more than two years. The story of Martha, a woman from Sierra Leone, was more compelling. Beaten, raped and tortured in her politically repressive homeland, she knowingly used someone else's passport to escape to America, but was caught by immigration authorities upon her arrival. She desperately sought political asylum. Not the kind of cases that lead to ground-breaking upheavals in the law, but the kind of cases that are handled day in and day out by lawyers for the legally disenfranchised who have no where else to turn. The work of attorneys from Legal Services of New Jersey will be highlighted in a onehour documentary, "Quest for Justice," to be aired 9 p.m. today on New Jersey Network. Produced by NYD2, a communications firm based in Somerset, the documentary features case histories of clients whose needs ranged from housing to fighting off deportation. Joseph, a 54-year-old naturalized citizen, turned to Legal Services when the landlord of his federally subsidized apartment complex in Elizabeth turned a deaf ear to his request for a ground-floor apartment. Having lost the use of his left arm in warding off the machete attack during a robbery attempt, Joseph said he found it increasingly difficult to negotiate the five flights of stairs lugging groceries or laundry on the frequent occasions when the building's elevator was out of order. "With this, it became impossible for me to stay upstairs," he said, pointing to the scars on his forearm. "If I cannot carry my groceries or my laundry, how can I live?" "It was a compelling case," said Legal Services attorney Stephen St. Hilaire. "The key for us -- and we have to make tough decisions all the time on whether to take a case -- was visualizing what he had to do to get to the fifth floor, struggling with a bag of groceries," he said. Benjamin, 53, of Jersey City had been collecting Social Security disability after undergoing double bypass surgery when the checks stopped coming. He said the agency claimed he had failed to return a form updating the condition of his health. "But what got me was they didn't let me know they didn't get it, they just cut me off," he said, adding he found it impossible to negotiate the Social Security bureaucracy himself. <sep>Why did native Haiti Jean-Claude lose his hand?<sep>Injured when attacked

Answer: Yes


Question: 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 to — and from — Rome. 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>390 B.C

Answer:
Yes


