2001 Nobel economics prize winner Joseph Stiglitz, meanwhile, said the new currency could come about quickly if it was based on an expansion of the IMF's already established system of Special Drawing Rights, units of exchange used by the IMF which already have some of the features of currency. Stiglitz argued that, as the US dollar has become the standard global reserve currency, it has inadvertently created a system which hurts the world economy. "It's a net transfer, in a sense, to the United States of foreign aid," he argued, reasoning that when other countries purchase US dollars in order to use them on international markets (such as for the buying and selling of petroleum), they effectively give the US a zero-interest loan sometimes at times when they can least afford it. Stiglitz made his comments as head of a United Nations panel of economists giving recommendations to address the global financial crisis.
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Question: Joseph Stiglitz is the winner of a Nobel prize in economics.
yes
According to an Israeli official, the murders of Galan, a high-ranking police officer, and a judge last week were probably carried out by an Israeli mercenary paid by the Medellin cartel - the world's most powerful drug-trafficking mafia - which has set up paramilitary squads accused of hundreds of individual murders and massacres against political and labor leaders, as well as peasants and patriotic union leftist militants in different parts of the country.
Is this true: An Israeli official was killed by patriotic union leftist militants.
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- yes
- no

A: no
Question:
In 1954, in a gesture of friendship to mark the 300th anniversary of Ukrainian union with Russia, Soviet Premier Nikita Khrushchev gave Crimea to Ukraine.
Is this true?
Crimea became part of Ukraine in 1954.
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Answer:
yes
Problem: The president Cristiani spoke today at the El Salvador military airport before he left for Costa Rica to attend the inauguration ceremony of president-elect Rafael Calderon Fournier.

Based on that paragraph can we say the following?
Cristiani is the president of Costa Rica.

OPTIONS:
- yes
- no
****
Answer: no
Q: Ask Andy Grove, chairman of Intel, about his toughest business challenge, and a pensive look appears in his piercing blue eyes.
Andy Grove is chairman of Intel.
OPTIONS:
- yes
- no

A: yes
A rocket attack killed two Israelis, including a 3-year-old boy.
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- yes
- no
Question: A three-year-old was killed in a rocket attack.
yes