Count the number of occurrences of the letter "A" in the given sentence.
The number of occurrences of the letter "A" in the given sentence is 1.
The quick brown fox jumps over the lazy dog.
Below is an instruction that describes a task, paired with an input that provides further context. Write a response that appropriately completes the request.

### Instruction:
Count the number of occurrences of the letter "A" in the given sentence.

### Input:
The quick brown fox jumps over the lazy dog.

### Response:
The number of occurrences of the letter "A" in the given sentence is 1.