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: 'fruits and vegetables are on display on a table draped with a red and gold covering'. How many words start with the letter 'a' in the sentence.
Example Output: 5

Example Input: Sentence: 'a husky is sleeping while wearing a green bandana'. How many words start with the letter 's' in the sentence.
Example Output: 1

Example Input: Sentence: 'a woman running with a dog on a leash in the ocean water'. How many words start with the letter 'a' in the sentence.
Example Output:
3