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 counter topped with vases in front of a window'. How many words start with the letter 'w' in the sentence.
answer:
2


question:
Sentence: 'a horse pulling a carriage with people in the snow'. How many words start with the letter 'a' in the sentence.
answer:
2


question:
Sentence: 'a man throwing a frisbee in a grass area'. How many words start with the letter 'a' in the sentence.
answer:

4