Hi, I tried to use the built-in "Classify" function with "Sentiment" option for classifying simple sentences as listed below.

Classify["Sentiment", "That John is a good football player is an incorrect statement"] => Positive

Classify["Sentiment", "That John is a good football player is a false statement"] => Positive

Classify["Sentiment", "It is not wrong to say that she is a nice person"] => Negative

Classify["Sentiment", "It is not false that she is a nice person"] => Negative

As you can see, the classifications are all incorrect. Do I need to train the classifier? How?

Regards,

Rangarajan