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

[EX Q]: Sentence: 'a large airplane flying over a dry grass hillside'. How many words contain the letter 'e' in the sentence.
[EX A]: 4

[EX Q]: Sentence: 'several people and a dog riding on a small boat'. How many words contain the letter 'l' in the sentence.
[EX A]: 3

[EX Q]: Sentence: 'the bird sits on a thin branch near berries'. How many words contain the letter 'z' in the sentence.
[EX A]:
0