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.

[Q]: Sentence: 'a man with baseball gear on holding a bat in his hands'. How many words start with the letter 'a' in the sentence.
[A]: 2


[Q]: Sentence: 'this is a park with people flying kites'. How many words start with the letter 'p' in the sentence.
[A]: 2


[Q]: Sentence: 'a stop sign in an older residential neighborhood is marked with graffiti'. How many words start with the letter 'g' in the sentence.
[A]:
1