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 laptop and some computers on a desk'. How many words start with the letter 'd' in the sentence.
[A]: 1


[Q]: Sentence: 'a couple of people are riding horses in a village'. How many words start with the letter 'a' in the sentence.
[A]: 3


[Q]: Sentence: 'a man with a cowboy hat and spurs is on a horse with a saddle'. How many words start with the letter 'a' in the sentence.
[A]:
5