In this task, you need to count the number of words in a sentence that start with the given letter. Answer with numbers and not words.

Example Input: Sentence: 'a bucket of individual candy powder on a table'. How many words start with the letter 'c' in the sentence.
Example Output: 1

Example Input: Sentence: 'a green place mat sitting on a table with a couple of plates of food and a drink placed upon it'. How many words start with the letter 'p' in the sentence.
Example Output: 3

Example Input: Sentence: 'a large amount of cameras on a wooden table'. How many words start with the letter 'a' in the sentence.
Example Output:
3