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

Sentence: 'a commuter train near a platform with no one on it'. How many words contain the letter 'z' in the sentence.
0

Sentence: 'a man with a surfboard walking across a bridge towards the ocean'. How many words contain the letter 'w' in the sentence.
3

Sentence: 'a wooden clocks sits above a shelf holding several books'. How many words contain the letter 'b' in the sentence.

2