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

Sentence: 'a large zebra standing out in a grassy field'. How many words contain the letter 'e' in the sentence.
3

Sentence: 'a group of people cooking pancakes in the field'. How many words contain the letter 'g' in the sentence.
2

Sentence: 'a man in grey sweater throwing a baseball on sandy field'. How many words contain the letter 'y' in the sentence.

2