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We want to compare sentiment of comments across different languages to answer questions like this:

Are Haskell programmers more positive than Java programmers?

Basic task
• classifying the polarity of a given text at the document, sentence, or feature/aspect level
The expressed opinion can be positive, negative, or neutral.

Advanced task
• classifying how the sentiment classification looks like.
For instance, at emotional states such as "angry," "sad," and „happy."