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 on ski boards in the midst of a blizzard'. How many words start with the letter 's' in the sentence.
[A]: 1


[Q]: Sentence: 'a group of cows that are standing in the grass'. How many words start with the letter 'i' in the sentence.
[A]: 1


[Q]: Sentence: 'a cat looks at a computer screen while snuggled against a keyboard'. How many words start with the letter 'a' in the sentence.
[A]:
5