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: 'two giraffes are walking down a rocky path'. How many words start with the letter 'a' in the sentence.

A: 2
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Q: Sentence: 'a dog on one side of a glass door and a cat on the other side'. How many words start with the letter 'a' in the sentence.

A: 4
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Q: Sentence: 'a suitcase is nestled in a pile of snow and plastic containers'. How many words start with the letter 's' in the sentence.

A:
2
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