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 bus and a truck are pictured driving on a street'. How many words start with the letter 'a' in the sentence.

Answer: 5


Question: Sentence: 'a cat sitting on a pan in an oven'. How many words start with the letter 'a' in the sentence.

Answer: 3


Question: Sentence: 'a blue double decker bus and cars on a street'. How many words start with the letter 'b' in the sentence.

Answer:
2