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

Sentence: 'a surfer in a black wet suit riding a wave in the ocean'. How many words contain the letter 'x' in the sentence.
0

Sentence: 'a gothic tower features a clock near a river'. How many words contain the letter 'e' in the sentence.
4

Sentence: 'a woman holding a tennis racquet on a tennis court'. How many words contain the letter 'i' in the sentence.
3