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 white dog laying in an open suitcase'. How many words start with the letter 'i' in the sentence.
[A]: 1


[Q]: Sentence: 'a person takes a picture of a reflection in a mirror in the dark'. How many words start with the letter 'p' in the sentence.
[A]: 2


[Q]: Sentence: 'a surfboard and some other items on a rock'. How many words start with the letter 's' in the sentence.
[A]:
2