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

[Q]: Sentence: 'a person in the air with a skateboard upside down underneath'. How many words contain the letter 'i' in the sentence.
[A]: 4


[Q]: Sentence: 'living room that has boxes packed for moving'. How many words contain the letter 'u' in the sentence.
[A]: 0


[Q]: Sentence: 'a train traveling down tracks next to a train station'. How many words contain the letter 'g' in the sentence.
[A]:
1