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: 'two uncooked pizzas sit on a wooden table'. How many words start with the letter 't' in the sentence.
Example Output: 2

Example Input: Sentence: 'a desk with a cross on it and candles'. How many words start with the letter 'w' in the sentence.
Example Output: 1

Example Input: Sentence: 'a guy in a wetsuit sits on a bike with his surfboard'. How many words start with the letter 'w' in the sentence.
Example Output:
2