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

[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 beautiful woman holding a pink frosted cake'. How many words contain the letter 'q' in the sentence.
[A]: 0

[Q]: Sentence: 'a vase of sunflowers seated on a table in a restaurant'. How many words contain the letter 'u' in the sentence.
[A]:
2