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

[EX Q]: Sentence: 'a room with a mirror and a desk with a monitor'. How many words contain the letter 'z' in the sentence.
[EX A]: 0

[EX Q]: Sentence: 'an orange cat is lounging on a gray couch'. How many words contain the letter 'c' in the sentence.
[EX A]: 2

[EX Q]: Sentence: 'a handheld device displays facebook while lying on a computer keyboard'. How many words contain the letter 'l' in the sentence.
[EX A]:
4