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 black and white cat sits in a bathroom sink'. How many words start with the letter 'a' in the sentence.
[A]: 3


[Q]: Sentence: 'a man on a bike and a banana in the pocket'. How many words start with the letter 'a' in the sentence.
[A]: 4


[Q]: Sentence: 'a store tack with some items on it'. How many words start with the letter 'i' in the sentence.
[A]:
2