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 woman in a white tshirt and black pants skiing down a small hill'. How many words start with the letter 'd' in the sentence.

A: 1
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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
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Q: Sentence: 'a man holds up a hotdog topped with ketchup and relish'. How many words start with the letter 'a' in the sentence.

A:
3
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