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

[Q]: Sentence: 'a clock tower next to a building in a city'. How many words contain the letter 'a' in the sentence.
[A]: 3


[Q]: Sentence: 'black and white photo of old man riding a motorcycle'. How many words contain the letter 'n' in the sentence.
[A]: 3


[Q]: Sentence: 'a guy smiles while taking a selfie'. How many words contain the letter 'h' in the sentence.
[A]:
1