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

Sentence: 'a woman surfer is on an ocean wave'. How many words contain the letter 's' in the sentence.
2

Sentence: 'the facades of the buildings in the row are all the same'. How many words contain the letter 'f' in the sentence.
2

Sentence: 'a clear computer desk is shown with a computer on top'. How many words contain the letter 'n' in the sentence.

2