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: 'a woman sitting on some stairs by a ball and backpack'. How many words start with the letter 'b' in the sentence.
answer:
3


question:
Sentence: 'a street sign against a smoggy palm tree filled sky'. How many words start with the letter 's' in the sentence.
answer:
4


question:
Sentence: 'there is a young girl that is posing in front of many surf boards'. How many words start with the letter 'i' in the sentence.
answer:

3