instruction:
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.
question:
Sentence: 'some signs buildings trees bushes a green and white sign'. How many words start with the letter 's' in the sentence.
answer:
3


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: 'a few people are hanging out and appreciating their time'. How many words start with the letter 'a' in the sentence.
answer:

4