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

[EX Q]: Sentence: 'a woman sitting on some stairs by a ball and backpack'. How many words start with the letter 'b' in the sentence.
[EX A]: 3

[EX Q]: Sentence: 'a man parasailing with a bright colorful kite'. How many words start with the letter 'a' in the sentence.
[EX A]:
2