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 bathroom mirror reflecting a sink and bathtub'. How many words start with the letter 'a' in the sentence.

Answer: 3


Question: Sentence: 'a close up of a baby with a tooth brush'. How many words start with the letter 'a' in the sentence.

Answer: 3


Question: Sentence: 'a long red bus driving past tall buildings'. How many words start with the letter 'b' in the sentence.

Answer:
2