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: 'a man holding an umbrella in one hand and a cell phone up to his ear in the other'. How many words contain the letter 'x' in the sentence.
0

Sentence: 'a man with a snowboard that is in the air'. How many words contain the letter 'e' in the sentence.
1