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 cake in the shape of a nurses hat written with the words congratulations danielle'. How many words start with the letter 'n' in the sentence.

A: 1
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Q: Sentence: 'a man riding skis down the side of a snow covered ski slope'. How many words start with the letter 's' in the sentence.

A: 5
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Q: Sentence: 'a man and woman in grass field playing with a frisbee'. How many words start with the letter 'a' in the sentence.

A:
3
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