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 cat lying on a desk with computers'. How many words start with the letter 'a' in the sentence.
[A]: 2


[Q]: Sentence: 'a airplane sitting on a tarmac with work trucks close by'. How many words start with the letter 'a' in the sentence.
[A]: 3


[Q]: Sentence: 'a person on a court with a tennis racket'. How many words start with the letter 'w' in the sentence.
[A]:
1