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 man putting a protective covering over a large tv screen'. How many words start with the letter 'l' in the sentence.
[EX A]: 1

[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: 'two men are riding horses on a beach'. How many words start with the letter 'r' in the sentence.
[EX A]:
1