instruction:
In this task, you need to count the number of words in a sentence that contain the given letter
question:
Sentence: 'a crowd of people walking around a city street'. How many words contain the letter 'p' in the sentence.
answer:
1


question:
Sentence: 'there are trains that are on the train track'. How many words contain the letter 'z' in the sentence.
answer:
0


question:
Sentence: 'a large brick building is on the corner of a street'. How many words contain the letter 'r' in the sentence.
answer:

4