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 us air force sitting on a runway near a field'. How many words start with the letter 'a' in the sentence.

Answer: 4


Question: Sentence: 'a blue brick building with a man leaning on it'. How many words start with the letter 'b' in the sentence.

Answer: 3


Question: Sentence: 'some fire trucks turning  into a parking lot on a toy set'. How many words start with the letter 's' in the sentence.

Answer:
2