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 group of boats floating in the ocean next to a dirty walkway'. How many words start with the letter 't' in the sentence.

A: 2
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Q: Sentence: 'a bus stops in order to pick up passengers'. How many words start with the letter 'p' in the sentence.

A: 2
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Q: Sentence: 'a corner features a corner store and people walking around on the sidewalk'. How many words start with the letter 'a' in the sentence.

A:
4
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