Sum up the ratings for the following reviews.
Review 1: 4 Stars
Review 2: 3 Stars
Review 3: 5 Stars
The sum of the ratings for the reviews is 12 stars (4 + 3 + 5).
Complete the following task based on the instruction and optional input provided.### Instruction:
Sum up the ratings for the following reviews.

### Input:
Review 1: 4 Stars
Review 2: 3 Stars
Review 3: 5 Stars

### Output:
The sum of the ratings for the reviews is 12 stars (4 + 3 + 5).