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 close up of a traffic light on a city street'. How many words start with the letter 'a' in the sentence.
answer:
3


question:
Sentence: 'a person takes a picture of a reflection in a mirror in the dark'. How many words start with the letter 'p' in the sentence.
answer:
2


question:
Sentence: 'a blue and yellow bus parked on the side of the street'. How many words start with the letter 'b' in the sentence.
answer:

2