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: 'kids at a skateboard park riding skateboards and watching'. How many words start with the letter 'a' in the sentence.
answer:
3


question:
Sentence: 'a group of people sitting at a restaurant table'. How many words start with the letter 'a' in the sentence.
answer:
3


question:
Sentence: 'an open and closed book sit on a bed'. How many words start with the letter 'a' in the sentence.
answer:

3