instruction:
In this task, you need to count the number of words in a sentence that contain the given letter
question:
Sentence: 'a green and white street sign on a pole and a light'. How many words contain the letter 's' in the sentence.
answer:
2


question:
Sentence: 'a girl is ready to serve the ball on a clay court'. How many words contain the letter 'd' in the sentence.
answer:
1


question:
Sentence: 'a window stands beyond a large tub in a room'. How many words contain the letter 'z' in the sentence.
answer:

0