Q: Nigeria has been the culprit so far, preventing the world from being completely polio-free.
Polio is under control in the world.
OPTIONS:
- yes
- no

A: no
The longest mission which these Salyuts supported was 63 days. The second generation Salyuts would fly missions much longer and would need to be resupplied from time to time; therefore, a supply ferry was mandatory to maintain a fully operational Salyut for two years with 40,000 pounds of fuel, food, clothing and water.
Can we say the following?
Russians hold record for longest stay in space.
OPTIONS:
- yes
- no

no
Question: Wilder and his colleagues are cautious about their results also because the data do not make clear whether it was the anesthesia that contributed to the children's learning deficits, or whether it was an underlying condition that may have required surgery and precipitated the learning problems. Of the more than 5,000 babies studied, 593 needed at least one surgery and just over 100 infants needed more than two before age 3. There may be something unusual about this population of children that could have made them vulnerable to learning problems and required they undergo surgery and anesthesia.

Anesthesia causes learning disabilities.

OPTIONS:
- yes
- no
Answer: no
Determine if the sentence is true based on the text below.
Crude oil prices rise.

Crude oil prices shot to new highs yesterday as markets reacted to a threat by Russian authorities to shut down most of the production from that country's largest oil company
OPTIONS:
- yes
- no
yes
Most of the life of Petko Kiryakov was not unveiled by historians but by the prominent Bulgarian writer Nikolai Haitov, who wrote a novel and a script which was turned into a TV series, which became a favourite of most Bulgarians.
OPTIONS:
- yes
- no
Question: Nikolai Haitov is a historian.
no
Q: Though owning no trees and no waters, Takeshima Island has become the subject of a bitter political dispute between Japan and South Korea.
There is a territorial waters dispute.
OPTIONS:
- yes
- no

A:
no