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

[EX Q]: Sentence: 'a fresh flower on a table in a piture of water'. How many words contain the letter 'n' in the sentence.
[EX A]: 2

[EX Q]: Sentence: 'a girl laying on a couch with a bird on her head'. How many words contain the letter 'v' in the sentence.
[EX A]: 0

[EX Q]: Sentence: 'two children on the floor with a box of fake pizza'. How many words contain the letter 'x' in the sentence.
[EX A]:
1