All of my prediction row are the same...

Hi,Im new on rapid miner;

at like tittle , all of my predictions are the same,but ı dont know?

all my predictions are negative when ı used naive bayes .

all my predictions are neutral when ı used decision tree.

ı have attached some screen capture about my train set or my result table.Please someone help me...

I just wanna do sentiment analysis on twitter data but ı coulnt do it...And my train set include 92 examples(ı know that isnt enough for the train set) But my train set was just 2 or 3 negative sentences but like I said;

when ı used naive bayes,all predictions were negative,but WHY?

PLEASE HELP ME...

Regards