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: 'a cat standing on a suitcase and checking out peoples bags'. How many words start with the letter 's' in the sentence.
[A]: 2


[Q]: Sentence: 'a person taking a slice of pizza from a pie'. How many words start with the letter 'p' in the sentence.
[A]: 3


[Q]: Sentence: 'a white dog wearing a hat and sunglasses laying in the grass'. How many words start with the letter 'a' in the sentence.
[A]:
3