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 light shines on five clocks showing times in different zones'. How many words start with the letter 'f' in the sentence.

A: 1
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Q: Sentence: 'a herd of elephants with large and small elephants at the zoo'. How many words start with the letter 'a' in the sentence.

A: 3
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Q: Sentence: 'a black and white car laying on a desk by a laptop computer'. How many words start with the letter 'b' in the sentence.

A:
2
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