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 man riding a skateboard at a skate park'. How many words start with the letter 'r' in the sentence.

A: 1
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Q: Sentence: 'an indoor bathroom with reflective marble counter tops'. How many words start with the letter 'i' in the sentence.

A: 1
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Q: Sentence: 'a cat sitting on a bed relaxing'. How many words start with the letter 'b' in the sentence.

A:
1
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