In this task, you need to count the number of words in a sentence that contain the given letter

[EX Q]: Sentence: 'a person that is playing a tennis game'. How many words contain the letter 'j' in the sentence.
[EX A]: 0

[EX Q]: Sentence: 'there is a red tea pot that has flowers in it'. How many words contain the letter 'o' in the sentence.
[EX A]: 2

[EX Q]: Sentence: 'a person jumping a skateboard at a skateboard competition'. How many words contain the letter 'd' in the sentence.
[EX A]:
2