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.

[EX Q]: Sentence: 'a woman that is holding up a banana'. How many words start with the letter 'w' in the sentence.
[EX A]: 1

[EX Q]: Sentence: 'a light shines on five clocks showing times in different zones'. How many words start with the letter 'f' in the sentence.
[EX A]: 1

[EX Q]: Sentence: 'a couple of people on a court with a tennis racket'. How many words start with the letter 'a' in the sentence.
[EX A]:
3