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: 'people on a tour bus with half the top cut off'. How many words start with the letter 'b' in the sentence.
[A]: 1


[Q]: Sentence: 'two men are flying kites in a field in front of a parking lot'. How many words start with the letter 'f' in the sentence.
[A]: 3


[Q]: Sentence: 'a slice of cake and some forks on a plate'. How many words start with the letter 'o' in the sentence.
[A]:
2