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 bowl of noodles is pictured on a table with eating utensils'. How many words start with the letter 'p' in the sentence.
Example Output: 1

Example Input: Sentence: 'a police car driving by a construction truck'. How many words start with the letter 'b' in the sentence.
Example Output: 1

Example Input: Sentence: 'stuffed monkey surrounded by bananas with a bunch on his head'. How many words start with the letter 'b' in the sentence.
Example Output:
3