instruction:
In this task, you need to count the number of words in a sentence that contain the given letter
question:
Sentence: 'a girl at a lake is looking at sand inside of a frisbee'. How many words contain the letter 'u' in the sentence.
answer:
0


question:
Sentence: 'a man on a motorcycle towing another man on a skateboard'. How many words contain the letter 'n' in the sentence.
answer:
6


question:
Sentence: 'there are two motorcycles that are parked on a road way on a hill'. How many words contain the letter 'i' in the sentence.
answer:

1