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

Sentence: 'a ram standing still in an empty pasture'. 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: 'an apple computer is on a white table'. How many words contain the letter 's' in the sentence.
1