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 mother bear and her two young are crossing a shallow river'. How many words start with the letter 'a' in the sentence.

A: 4
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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 bench with multiple bags of chips on top'. How many words start with the letter 'b' in the sentence.

A:
2
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