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

[Q]: Sentence: 'a man sanding next to a cow in a pen'. How many words contain the letter 'h' in the sentence.
[A]: 0


[Q]: Sentence: 'antique fire truck restored and displayed at outdoor event'. How many words contain the letter 'x' in the sentence.
[A]: 0


[Q]: Sentence: 'a photo of a horse on the back drop of an ocean'. How many words contain the letter 'r' in the sentence.
[A]:
2