It is not enough to describe some objects by their location. We may also need to know its direction. For example, a wind blows a storm over your school. Where is that storm coming from? Where is it going? How can we describe a direction? The most common way is by using a compass. A compass is a device with a floating needle (Figure 2.1). The needle is a small magnet. The needle aligns itself with the Earth's magnetic field. The compass needle always points to magnetic north. If you have a compass and you find north. You can then know any other direction. See the directions, such as east, south, west, etc., on a compass rose. The Earth has two poles. It has a magnetic north pole. It also has a geographic north pole. These two poles are close to each other but not the exact same place.

Question: "Why might it be helpful to know direction of a moving object, such as a storm, in addition to its location?"

OPTIONS:
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- yes

Answer: "research purposes"

Response: no

(CNN) -- As Iranian President Mahmoud Ahmadinejad visited the U.N. General Assembly in New York last month, the spotlight was once again on Iran. And true to form, the Iranian president made his fair share of provocative statements for the Western media. But while Ahmadinejad's mercurial rants captured our media's attention, back in Iran a coordinated strategy against the women's movement continued. On the eve of Ahmadinejad's arrival to New York, Shiva Nazar Ahari, a prominent young female defender of human rights, received a heavy sentence of six years in prison on charges including the vague crime of "waging war against God" -- a convenient catch-all offense for anyone who criticizes the regime and its human rights record. There's no denying it -- Iran's women have had a bad year. Nazar Ahari joins a steadily increasing number of other women's rights activists who are in prison for no greater crime than their attempt to fight for the rights of the women. Hengameh Shahidi, Alieh Eghdam Doust, Bahareh Hedayat and Mahdiyeh Golrou have all been sent to Tehran's notorious Evin Prison on trumped-up charges related to their activism. And while Nobel Peace Prize laureate Shirin Ebadi, arguably the most internationally recognized Iranian women's rights activist, remains unable to safely return to her country, the government is targeting those affiliated with her for arrest and imprisonment, including her lawyer Nasrin Sotoudeh and her former aide Jinous Sobhani. Since the 2009 disputed elections and associated government crackdown on the overall reform movement, the government has increasingly targeted women activists. The reasons behind this go well beyond the misogynist nature of Iran's religious leadership. Rather, it is more part of a deliberate and calculated strategy of the Iranian authorities to strike at the heart of the regime's greatest vulnerability -- internal legitimacy with its own people. See more CNN.com opinion articles Iran's government recognizes and fears the broader power of the women activists who have been on the front line of reform in Iran for more than a decade. One can roughly draw an analogy between the women's movement in Iran to movements of religious groups in Burma or Tibet, or the labor "solidarity" movements in the former Eastern bloc and associated labor-Roman Catholic solidarity in Poland -- all advocating initially for the freedoms of a specific group but which provoked government fears for their transformative power to promote broader human rights progress. While the outside world occasionally reacts to the most egregious manifestations of Iran's repression of women -- such as the international condemnation associated with Sakineh Mohammadi Ashtiani, an Iranian widow sentenced to stoning on charges of alleged adultery -- these events are often portrayed simply as a consequence of the regime's archaic viewpoint about gender.

Question: "Who came to New York the evening Nazar Ahari was sentenced?"

OPTIONS:
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Answer: "Mahmoud Ahmadinejad"

Response: yes

(CNN) -- We'll let you finish, but The Muppets have the best Instagram account of all time. The feed was launched just over a month ago as part of a promotional push for their upcoming movie, "Muppets Most Wanted." But in between quippy posters and ads for the film, which is a sequel to 2011's blockbuster "The Muppets" with Jason Segel, there are ingenious "selfies" from the Muppets crew. In fact, the first post was a coy snapshot from Kermit, Miss Piggy and Gonzo, with a filter in full effect: And the selfies grew more adorable -- and more hilarious -- from there: We now have evidence of the time Animal burst in on Beaker in the bathroom. And we know what Gonzo does after a hard day of stunts. "Gonzo treated himself to a massage today to try to work out all of his stuntman kinks. Even weirdos need pampering. #bougielife #yolo," reads the caption to this pic: The Muppets' curmudgeonly yet lovable critics, Statler and Waldorf, are still trying to get the hang of taking the perfect selfie -- "This is the fanciest calculator we've ever seen!" they were heard saying when the photo was taken -- while Rowlf is clearly a selfie king. From the Swedish Chef to Miss Piggy's evil alter ego, everyone has gotten in on the first-person photo sessions. The only people noticeably missing from the account are the Muppets' human co-stars in "Muppets Most Wanted," like Tina Fey, Ty Burrell and Ricky Gervais. As with the first "Muppets" film, which also starred Amy Adams, Chris Cooper and Rashida Jones, the "Muppets" sequel has plenty of human star power. In addition to Fey and Gervais, "Muppets Most Wanted" also has appearances from Tom Hiddleston, Salma Hayek, Stanley Tucci and Lady Gaga.

Question: "What does Gonzo treat himself with after a hard day of stunts?"

OPTIONS:
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- yes

Answer: "A massage"

Response: yes

There once was a guy named Kevin and girl named Erin. They really liked spending time together. One day, Kevin traveled from his home in the United States of America to Erin's house in England. They then thought to take a sudden trip around the world. They first traveled by plane around Europe, where they saw many different people and sights. They then took a boat to Africa and Asia, where they went on a trip through the mountains. Later in the month, they traveled to China by train and were allowed to see how different life was over there. Next they took another plane to Australia, where they had a lot of fun seeing kangaroos and a different type of English speaking people. After spending a week in Australia, Kevin and Erin took a really long plane ride to North America, where they drove across the land. They saw everything from the mountains to forests. They even got to visit the beach! Because they had so much fun, Kevin returned home with Erin to England where they hung out and spent the next few days and months talking about all of the neat things they saw and did on their trip.

Question: "How long did Kevin and Eric stay in Australia?"

OPTIONS:
- no
- yes

Answer: "One night"

Response:
no