instruction:
In this task, you need to count the number of words in a sentence that contain the given letter
question:
Sentence: 'there is a person awaiting to cross this street'. How many words contain the letter 'a' in the sentence.
answer:
2


question:
Sentence: 'a little boy learning to throw a frisbee'. How many words contain the letter 'h' in the sentence.
answer:
1


question:
Sentence: 'a young man with a laptop bag travels on a skateboard'. How many words contain the letter 'z' in the sentence.
answer:

0