instruction:
In this task, you need to count the number of words in a sentence that contain the given letter
question:
Sentence: 'some elephants in a field of grass near a tree'. How many words contain the letter 'k' in the sentence.
answer:
0


question:
Sentence: 'a zebra standing still in the grass near a tree'. How many words contain the letter 'w' in the sentence.
answer:
0


question:
Sentence: 'there are many people and having some fun'. How many words contain the letter 'r' in the sentence.
answer:

2