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 giraffe is standing behind a stone wall'. How many words start with the letter 'a' in the sentence.

A: 2
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Q: Sentence: 'two adults and a child fly a kite at the beach'. How many words start with the letter 'a' in the sentence.

A: 5
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Q: Sentence: 'a dog laying in the sun by a window'. How many words start with the letter 'a' in the sentence.

A:
2
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