Problem: According to research done by an anti-spam research company Sophos, the United States is the point of origin of over 42% of all spam. Trailing are South Korea with 13% and China with 8% of the world's spam. The security firm performed an audit of its honeypots to come up with the figures ―a honeypot is a special system set up to attract spam or spammers in order to gauge spammer activity. Such activity is not entirely unexpected. The United States accounts for slightly over 25% of all Internet usage, whereas South Korea and China have about 4% and 11% of the world's Internet users, respectively. Yet these percentages still point to the U.S. as being a disproportionate source for spam.

Based on that paragraph can we say the following?
The United States produces spam.

OPTIONS:
- yes
- no
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Answer: yes


Problem: Oil prices, notoriously vulnerable to political events, spiked as high as $40 a barrel during the Gulf War in 1991.

Based on that paragraph can we say the following?
The Gulf War was fought in 1991.

OPTIONS:
- yes
- no
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Answer: yes


Problem: They, too, have not produced a practical, commercially acceptable maglev.

Based on that paragraph can we say the following?
Maglev is commercially used.

OPTIONS:
- yes
- no
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Answer: no


Problem: Norway's most famous painting, "The Scream" by Edvard Munch, was recovered Saturday, almost three months after it was stolen from an Oslo museum.

Based on that paragraph can we say the following?
Edvard Munch painted "The Scream".

OPTIONS:
- yes
- no
****
Answer:
yes