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: 'some nice decorations left on a window pane'. How many words start with the letter 'l' in the sentence.

A: 1
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Q: Sentence: 'a man wearing a beret while using a laptop computer'. How many words start with the letter 'u' in the sentence.

A: 1
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Q: Sentence: 'a fire truck and an ambulance driving down the street'. How many words start with the letter 'a' in the sentence.

A:
4
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