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 lone zebra standing in the middle of a field'. How many words start with the letter 'i' in the sentence.

A: 1
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Q: Sentence: 'there is a group of people with horses and a wagon'. How many words start with the letter 'a' in the sentence.

A: 3
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Q: Sentence: 'a bathroom with a white toilet with a tiled floor and wall'. How many words start with the letter 'w' in the sentence.

A:
4
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