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

Sentence: 'a van follows behind a bus on a rural road'. How many words contain the letter 'q' in the sentence.
0

Sentence: 'four white and blue street signs on a wooden pole'. How many words contain the letter 'u' in the sentence.
2

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

3