Problem:
Read the following paragraph and determine if the hypothesis is true:

How to tune a unison on a piano<br>Open up the piano to expose both the tuning pins and the keys. Depending on the piano, this usually requires removal of the front part of the upper cabinet and sometimes the key cover. Play the offending note and find the strings associated with that note.
Hypothesis: Pianos have been used to play music in many different songs.
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Answer:
Yes

Problem:
Read the following paragraph and determine if the hypothesis is true:

The Israeli army forces carried out, on Saturday, a widespread military operation into the West Bank town of Jenin and its refugee camp, local Palestinian sources said.
Hypothesis: The operation took place in Iran
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Answer:
No

Problem:
Read the following paragraph and determine if the hypothesis is true:

And Haitians have their problems, but we gave them a chance to restore democracy. That's really about all we can do. But if you have a situation like that right in our backyard with chaos about to break out and flotillas forming to come across the water, and all kinds of violence there, right in one of our neighboring countries there, then I think that we did the right thing there.
Hypothesis: They want to support jaimaca
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Answer:
It's impossible to say