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 striped bus travels down a city street at night'. How many words start with the letter 'a' in the sentence.
[A]: 3


[Q]: Sentence: 'a white glass vase filled with flowers on top of a table'. How many words start with the letter 'o' in the sentence.
[A]: 2


[Q]: Sentence: 'a fish is being prepared next to a piece of bread'. How many words start with the letter 'b' in the sentence.
[A]:
2