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.

Question: "What are three examples of density given in the article?"

Response: "Watching a bird inflight"
OPTIONS:
- no
- yes

A: no

Problem: Energy often changes from one form to another. For example, the drummer transfers motion to sound energy. When the moving drumstick strikes the drum head, the drum starts to vibrate. The motion of the vibrating drum head creates the sound you hear. Any form of energy can change into any other form. Frequently, one form of energy changes into two or more different forms. Have you ever sat in front of a campfire? What are two things you notice? The fire creates light. It is also warm by the fire, meaning it creates heat. The energy of the fire comes from the stored energy in the wood. The wood contains chemical energy. As it burns, the chemical energy is changed into light and heat. Not all chemical energy changes produce light and heat. Our cars use gasoline as a fuel. Gasoline contains chemical energy. When our cars burn gasoline in their engines, it is converted into motion and heat. When energy changes forms, energy is conserved.

Question: "How is burning wood in a campfire different from burning gasoline in a car?"

Answer: "The former produces chemical energy whereas the latter causes motion"

OPTIONS:
- no
- yes
Answer: no

Question:
(CNN) -- Argentina's star-studded line-up began their World Cup campaign with a 1-0 victory over Nigeria in their Group B opener in Johannesburg on Saturday. A goal from defender Gabriel Heinze after six minutes was all that separated the two teams after an inspired display from Nigeria goalkeeper Vincent Enyeama. But South Korea ended the day on top of the group following a 2-0 victory over Greece in Port Elizabeth earlier on Saturday. Goals from Lee Jung-Soo and Park Ji-Sung gave the 2002 semifinalists a comfortable win over the 2008 European cvhampions. Argentina 1-0 Nigeria Enyeama could do little to stop Heinze's powerful early header from a Juan Sebastian Veron corner, but he kept his team alive with a string of acrobatic saves to deny World Player of the Year Lionel Messi. Diego Maradona was delighted to secure his first victory as a World Cup coach, but critical of his strikers for failing to make the game safe. "When you don't kill things off in front of goal you can pay a heavy price. They almost got a draw -- we missed loads of chances," Maradona told AFP. "Players such as Leo Messi and Higuain knocked in around 60 goals last season between them, yet today it was almost as if they couldn't set their sights on goal. "But the win means we can be calm -- we are in the right track." After reading the above, is "Argentina" the correct answer to the question "Who were the 2008 European champions?"? OPTIONS:
- no
- yes

Answer:
no

Input: Dubai's Crown Prince Sheikh Mohamed Bin Rashid Al Maktoum inaugurated a free zone for e-commerce today, called Dubai Internet City. The preliminary stages of the project, the only one of its kind according to its designers, are estimated at $200 million. Sheikh Mohamed, who is also the Defense Minister of the United Arab Emirates, announced at the inauguration ceremony that "we want to make Dubai a new trading center." The minister, who has his own website, also said: "I want Dubai to be the best place in the world for state-of-the-art technology companies." He said companies engaged in e-commerce would be able to set up offices, employ staff and own equipment in the open zone, including fully-owned foreign companies. The e-commerce free zone is situated in north Dubai, near the industrial free zone in Jebel Ali, the top regional and tenth international leading area in container transit. The inauguration of Dubai Internet City coincides with the opening of an annual IT show in Dubai, the Gulf Information Technology Exhibition (Gitex), the biggest in the Middle East.
"Where did the minister talk about the Dubai internet city?" is "Somewhere in the UAE"?

OPTIONS:
- no
- yes
Output: yes

Input: The film begins with Brick Bardo ( Tim Thomerson , from ( ( Dollman hitchhiking to get to the town of Pahoota , where he tries to find a girl named Nurse Ginger ( Melissa Behr , who was shrunken to 11 inches in ( ( Bad Channels , to prove to her that she's not alone . Meanwhile , the film cuts to Judith Grey , who has a nightmare about the events that happened in the previous film a year before . Ever since the events that took place a year before , Judith has been watching the Toyland Warehouse , believing that the toys are still alive . Meanwhile , a bum breaks into the Warehouse , and starts to mess around with a clown tricycle , until he gets knocked in the head with a box of toys , causing him to hit his head on the ground , killing him . However , his blood continues to flow over to the place where the demon was buried , and brings back : Baby Oopsie Daisy , Jack Attack , Mr. Static , and this time brings up a new killer toy named Zombietoid , a blonde GI JOE action figure with a sword as a weapon . Judith , who's now inside the building , finally sees the toys in full view , but is then arrested for breaking into a secluded building . After the police leave , the toys force the new security guard Ray Vernon to help them with their needs . Meanwhile , Judith , who now knows about Nurse Ginger and Brick Bardo's history , bribes a news reporter to tell her where they 're at , and tells her they are in Pahoota . Judith , after having a deal with Bardo and Ginger to help her kill the toys , they head off back to the Warehouse .

Does the response "Judith runs away and the new security guard quits" correctly answer the question "What happens to Judith, and what happens to the new security guard?"?

OPTIONS:
- no
- yes
***
Output: no

Input: Is this an insect or an animal? A snail is an animal just like you and me. Thats right, you too are an animal. No, you don't look like a snail. You do have some things in common. Animals can be divided into many groups. These groups are decided based on their characteristics. All animals have some basic features in common. That does not mean they are the same. They also have many differences. For example, snails are mollusks and not insects. Mollusks have a unique set of features. Notice the large foot that allows it to move. Yes, it only has one foot. Did you notice the long antennas on its head? This is where the snail's eyes are. They are on the end of the antenna. They are not on its head like most animals. The foot and eyes are unique features. Scientists use these features to place animals into groups.

Does the response "On the face" correctly answer the question "Where are snails' eyes?"?

OPTIONS:
- no
- yes
***
Output:
no