Input: The inhabited history of the Las Vegas Valley stretches to 23,000 b.c. , when much of the area was covered by a prehistoric lake. During this period, the indigenous people lived in caves, hunting the mammals that gathered at the shoreline. The landscape of the valley changed dramatically over the next 200 centuries. The glaciers feeding the lake melted away and the lake evaporated. Fossils tell an obscure story of man's slow and sporadic development. Around 3000 b.c. , native Archaic Indians began to develop a lasting hunting and gathering culture. By this time, the valley was in much the same geographic state as it exists in today, with one exceptionthe presence of artesian springs that bubbled to the surface in several areas. These springs fed a network of streams draining through the Las Vegas Wash to the Colorado River. The areas surrounding the springs were desert oases: sprawling collections of grasses, trees, and wildlife. Many springs lay in areas that would eventually become the center of the modern Las Vegas metropolis. For about 4000 years, the Archaics thrived in a culture that included many signs of early civilization. Signs of even more advancement appeared halfway through the first millennium a.d. , when the Anasazi Indians inhabited the valley. Far more progressive than the Archaics, the Anasazi utilized such formal agricultural techniques as irrigation to assist their harvest. This permitted the Anasazi to achieve a benchmark of advanced societythe ability to live in permanent shelters year-round without need to follow wildlife. Mysteriously, the Anasazi vanished from the valley around a.d.
"When did the artesian springs first appear?" is "23,000 B.C"?

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- yes
Output: no

Input: Fossils can be used to match up rock layers. As organisms change over time, they look different. Older fossils will look different than younger fossils. Some organisms only survived for a short time before going extinct. Knowing what organisms looked like at certain times also helps date rock layers. Some fossils are better than others for this use. The fossils that are very distinct at certain times of Earths history are called index fossils. Index fossils are commonly used to match rock layers. You can see how this works in Figure 2.30. If two rock layers have the same index fossils, then they're probably about the same age.

Does the response "The fossils that are very distinct at certain times of Earths history" correctly answer the question "What key do index fossils play in dating rock layers?"?

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Output: yes

The violent arena of domestic abuse litigation has grown a bit more volatile here, now that a judge has decided to hold two women in contempt of court for returning to men who had been ordered to stay away from them. "You can't have it both ways," said Judge Megan Lake Thornton of Fayette County District Court in recently fining two women $100 and $200 respectively for obtaining protective orders forbidding their partners from contacting them, then relenting and contacting the men. Ruling that the order was mutually binding, Judge Thornton also cited the men for contempt. "It drives me nuts when people just decide to do whatever they want," said Judge Thornton, who is experienced in the state's thick domestic abuse docket, which produces close to 30,000 emergency protective orders a year. Kentucky officials say there is a virtual epidemic of abusive relationships in the state. Judge Thornton's ruling has alarmed advocates for battered women, who plan to appeal it. The advocates say the finding goes beyond existing law and is unrealistic because some renewed contacts often prove unavoidable in domestic abuse cases, which involve economic and family dependency and other complications of daily living. The state office on domestic violence has pointedly agreed, warning that the ruling could cause abused women to hesitate in bringing their plight before the courts for fear of being chastised for their trouble. "The reality is it's easy to say they should never have contact," said Sherry Currens, executive director of the Kentucky Domestic Violence Association, an advocacy and legal protection group. "But we're talking about people in long-term relationships. They may have children in common. It's pretty hard to say, 'Never speak again.' People have financial difficulties. They may love the partner. It's not an easy thing." But Judge Thornton declared in court, "When these orders are entered, you don't just do whatever you damn well please and ignore them." The ruling stunned Cindra Walker, the lawyer for the two women, who is with Central Kentucky Legal Services, which represents many of the thousands of indigent women caught in abusive relationships. "For over five years, I've been in court practically every day on these abuse cases," Ms. Walker said, "and I've never before had a victim threatened with contempt."

Question: "What prompted Judge Megan Lake Thornton to make the statement: "You can't have it both ways.""

OPTIONS:
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- yes

Answer: "For returning to men who had been ordered to stay away from them"

Response: yes

Problem: "What goes up must come down." You have probably heard that statement before. At one time this statement was true, but no longer. Since the 1960s, we have sent many spacecraft into space. Some are still traveling away from Earth. So it is possible to overcome gravity. Do you need a giant rocket to overcome gravity? No, you actually overcome gravity every day. Think about when you climb a set of stairs. When you do, you are overcoming gravity. What if you jump on a trampoline? You are overcoming gravity for a few seconds. Everyone can overcome gravity. You just need to apply a force larger than gravity. Think about that the next time you jump into the air. You are overcoming gravity for a brief second. Enjoy it while it lasts. Eventually, gravity will win the battle.

Question: "Can everyone overcome gravity by applying a larger force than gravity?"

Answer: "Yes"

OPTIONS:
- no
- yes
Answer:
yes