Take a look at this train in Figure 1.11. It looks very futuristic. What do you notice about it? Did you notice that the train has no wheels? How can a train have no wheels? It doesn't need wheels. It actually floats, or levitates, just above the track. Magnets enable the train to do this. This is not a normal train. This is a maglev train. The word maglev stands for magnetic levitation. Because it has no wheels, there is no friction. Some magnets hold the train up. Other magnets are used to move the train forward. This train can go very fast. It can reach speeds up to 480 kilometers (300 miles) per hour! Magnets are pretty cool. What exactly is a magnet? How is it able to exert such force?

Question: "Is there a kind of train that has no wheels?"

OPTIONS:
- no
- yes

Answer: "A maglev train has no wheels"

Response: yes

Charlie Y. Reader is a 35-year-old theatrical agent in New York , living a seemingly idyllic life as a bachelor . Numerous women ( among them Poppy , Helen , and Jessica come and go , cleaning and cooking for him . Charlie 's best friend since kindergarten , Joe McCall , who has a wife named Ethel and children in Indianapolis , comes to New York for a stay at Charlie 's apartment , claiming that the excitement is gone from his 11-year marriage and that he wants to leave his wife . Joe envies and is amazed by Charlie 's parade of girlfriends , while Charlie professes admiration for Joe 's married life and family . At an audition , Charlie meets singer-actress Julie Gillis . She has her life planned to a tight schedule , determined to marry and retire from performing to a life of child-rearing by 22 . Although at first she wards off Charlie 's advances , she comes to see him as the ideal man for her plans . Julie demands that Charlie stop seeing other women . Charlie balks , but he begins to fall in love with her . Joe starts keeping company with Sylvia Crewes , a sophisticated classical musician and a typically neglected lover of Charlie 's . Sylvia is approaching 33 and desires marriage as much as the younger Julie does . One day , annoyed by Julie and possibly jealous of Joe 's attentions , Charlie blurts out a proposal of marriage to Sylvia . She is thrilled , only to discover the morning after their engagement party that he has proposed to Julie as well . Joe confesses his love to Sylvia and asks her to marry him .

Question: "Charlie begins to fall in love with who?"

Response: "Julie Gillis"
OPTIONS:
- no
- yes

A: yes

Problem: Independence with Partition: The British began to see India's independence as inevitable; however, only a few seemed to understand the vital role of the religious groups. Britain prepared a parliamentary democracy with majority rule, but the majority were Hindusand Hindus, Muslims, and Sikhs had been killing each other in war for many centuries. Nehru's Congress Party, largely Hindu with a socialist leadership, wanted a parliamentary democracy. As counterweight, British legislation reserved parliamentary seats for religious minorities, but the Punjab and Bengal had such a complicated mixture of Hindus, Muslims, and Sikhs that it was not possible to avoid fights over how separate constituencies were to be formed. The seeds of future trouble were sown. The legislation on reserving seats gave the Muslims the basis for an alternative to an India in which they were only a quarter of the population: Partition. In 1930, the poet Muhammad Iqbal proposed a separate Muslim homeland in the northwest of India. A small group of Indian Muslims at Cambridge came up with the name Pakistan, using the initials of the Punjab, Afghania (N.W. Frontier Province), Kashmir, and Sind (at the same time producing the word pak, meaning "pure"), and adding "stan," the Persian suffix for the word "country. " The Muslim campaign for Partition was led by London-trained Bombay lawyer, Muhammad Ali Jinnah. Meanwhile, Gandhi vehemently opposed any dismemberment of the country, and tried to keep people united by fasting to uphold the spirit of love, and by focussing on the common adversary: the British. Advocating civil disobedience, he led his famous Salt March to the sea, to scoop up salt and circumvent the hated British salt tax. This put more than 60,000 in jail. Against this militancy, World War II did not elicit the solidarity of the first. Indians courageously fought alongside the British troops, in Burma, the Middle East, and Europe, but Gandhi saw the British as a provocation for Japanese invasion and was jailed yet again, for launching a "Quit India" campaign in the year 1942. Some anti-British extremists saw the Japanese as an Asian liberator. Winston Churchill didn't want any Indian independence and so it was probably as well for India that he was defeated by Attlee's Labor Party in 1945. With riots growing ever more bloody in Bengal, Bihar, and the Punjab, India's last viceroy, Lord Mountbatten, kept a mandate to make the British departure as quick and as smooth as possible. Quick it wassix months after his arrivalbut not smooth.

Question: "Who led the famous Salt March to the sea?"

Answer: "Nehru"

OPTIONS:
- no
- yes
Answer: no

Question:
Magnetism is the ability of a material to be attracted by a magnet. It also include the ability for some material to act like a magnet. No doubt youve handled refrigerator magnets. You can see some in Figure 1.28. You probably know they stick to a metal refrigerator. This is what holds your homework up. Maybe your little sisters drawings are hung on the fridge in this manner. Do magnets stick to all materials? Of course not. You have probably checked and they do not stick to other surfaces. They do not stick to wooden doors or glass windows. Wood and glass are not attracted to a magnet. Obviously, only certain materials are attracted to magnets. After reading the above, is "Only certain materials are attracted to magnets" the correct answer to the question "Do Magnets stick to all materials?"? OPTIONS:
- no
- yes

Answer:
yes

You approach the door of your friends house. What is the first thing you do before entering? Of course, you wipe your feet. You are a thoughtful visitor. Fortunately, there is a nice piece of carpet by the door to wipe your shoes. Too bad your caring comes at a price. After wiping your feet on the mat you reach out to touch the brass knocker on the door. A spark suddenly jumps between your hand and the metal. You feel an electric shock. Why do you think an electric shock occurs? An electric shock occurs when there is a sudden discharge of static electricity. Has this ever happened to you? You reached out to touch a metal doorknob and received an unpleasant electric shock? The reason you get a shock is because of moving electric charges. Moving electric charges also create lightning bolts. It is also the same reason electric current flows through cables and wires.

Question: "When you approach a friends house, what is the first thing you do before entering?"

OPTIONS:
- no
- yes

Answer: "You knock on the door"

Response:
no