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.

[EX Q]: Sentence: 'a woman walking up to a double decker bus that has stopped'. How many words start with the letter 'w' in the sentence.
[EX A]: 2

[EX Q]: Sentence: 'a cat is laying on a keyboard in front of double monitors'. How many words start with the letter 'm' in the sentence.
[EX A]: 1

[EX Q]: Sentence: 'a young man performs a skateboard trick at a park'. How many words start with the letter 'p' in the sentence.
[EX A]:
2