Predict the sentiment of the following sentence. Output 1 for positive, 0 for neutral and -1 for negative.
My day was so boring.
-1
Complete the following task based on the instruction and optional input provided.### Instruction:
Predict the sentiment of the following sentence. Output 1 for positive, 0 for neutral and -1 for negative.

### Input:
My day was so boring.

### Output:
-1