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

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

[EX Q]: Sentence: 'a room with a small light in the middle with a computer'. How many words contain the letter 's' in the sentence.
[EX A]: 1

[EX Q]: Sentence: 'a surfer crashes into the crest of an ocean wave'. How many words contain the letter 'z' in the sentence.
[EX A]:
0