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.
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Question: Sentence: 'a mother bear and her two young are crossing a shallow river'. How many words start with the letter 'a' in the sentence.

Answer: 4


Question: Sentence: 'a plate with potato pancakes and a fork'. How many words start with the letter 'p' in the sentence.

Answer: 3


Question: Sentence: 'a man wearing blue shirt taking a picture in a mirror of bathroom'. How many words start with the letter 'a' in the sentence.

Answer:
3