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.

Sentence: 'a beautiful young lady eating a candy apple on an amusement park ride'. How many words start with the letter 'a' in the sentence.
5

Sentence: 'montage color photograph of helmeted motorcycle riders and a rural fire station'. How many words start with the letter 'r' in the sentence.
2

Sentence: 'a baby horse stands next to its mother as she grazes on some grass'. How many words start with the letter 's' in the sentence.

3