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


[Q]: Sentence: 'a bedroom area with bed two dressers and a window'. How many words start with the letter 'w' in the sentence.
[A]: 2


[Q]: Sentence: 'a large bathroom with double sinks and a walk in shower'. How many words start with the letter 'a' in the sentence.
[A]:
3