Get the sentence with the highest sentiment score.
List: ["I'm so sad", "Life is not fair", "Take a break and relax", "We can be happy together"]
"We can be happy together"
Complete the following task based on the instruction and optional input provided.### Instruction:
Get the sentence with the highest sentiment score.

### Input:
List: ["I'm so sad", "Life is not fair", "Take a break and relax", "We can be happy together"]

### Output:
"We can be happy together"