instruction:
In this task, you need to count the number of words in a sentence that contain the given letter
question:
Sentence: 'people standing in a river surrounding an elephant some are touching it'. How many words contain the letter 'd' in the sentence.
answer:
2


question:
Sentence: 'a gray cat is wearing a santa hat'. How many words contain the letter 'm' in the sentence.
answer:
0


question:
Sentence: 'a yellow school bus driving past a traffic light'. How many words contain the letter 'e' in the sentence.
answer:

1