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 man is carrying a large case with him'. How many words start with the letter 'w' in the sentence.
answer:
1


question:
Sentence: 'person in profile and sunlight at a barred window'. How many words start with the letter 'a' in the sentence.
answer:
3


question:
Sentence: 'a black and white photo of a man cooking'. How many words start with the letter 'b' in the sentence.
answer:

1