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 photograph of a vase through its glass showcase'. How many words start with the letter 'i' in the sentence.
[A]: 1


[Q]: Sentence: 'a person with a hoodie on looking at a laptop'. How many words start with the letter 'l' in the sentence.
[A]: 2


[Q]: Sentence: 'two passengers sit on separate tracks inside a train station'. How many words start with the letter 's' in the sentence.
[A]:
3