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

[EX Q]: Sentence: 'a horse and a donkey stand in a fenced field'. How many words contain the letter 'd' in the sentence.
[EX A]: 5

[EX Q]: Sentence: 'a young man dressed as a nun skateboards down the street'. How many words contain the letter 'e' in the sentence.
[EX A]: 4

[EX Q]: Sentence: 'an apple sitting next to a banana on a table'. How many words contain the letter 'z' in the sentence.
[EX A]:
0