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 young man wearing glasses with a tooth brush in his mouth'. How many words start with the letter 'b' in the sentence.

A: 1
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Q: Sentence: 'a airplane sitting on a tarmac with work trucks close by'. How many words start with the letter 'a' in the sentence.

A: 3
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Q: Sentence: 'a baseball player is hitting the baseball at home plate'. How many words start with the letter 'a' in the sentence.

A:
2
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