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 bunch of people in a metropolitan area with umbrellas walking on a sidewalk next to buildings'. How many words start with the letter 'p' in the sentence.
[A]: 1


[Q]: Sentence: 'this is a living room table with several large chairs placed around it'. How many words start with the letter 'a' in the sentence.
[A]: 2


[Q]: Sentence: 'a fire hydrant painted yellow on a street curb'. How many words start with the letter 's' in the sentence.
[A]:
1