instruction:
In this task, you need to count the number of words in a sentence that contain the given letter
question:
Sentence: 'this is a yellow train riding the rails'. How many words contain the letter 'n' in the sentence.
answer:
2


question:
Sentence: 'a woman working her small shared office cubicle'. How many words contain the letter 'g' in the sentence.
answer:
1


question:
Sentence: 'a brown and white cow inside of a wooden pen'. How many words contain the letter 'n' in the sentence.
answer:

5