instruction:
In this task, you need to count the number of words in a sentence that contain the given letter
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 tennis player holds a ball as if to throw it in the air to serve it'. How many words contain the letter 'o' in the sentence.
answer:
4


question:
Sentence: 'a stop stop with only a white line on it'. How many words contain the letter 'x' in the sentence.
answer:

0