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

Ex Input:
Sentence: 'a green blue and yellow boat sitting in a harbor'. How many words contain the letter 'o' in the sentence.

Ex Output:
3


Ex Input:
Sentence: 'a business man is talking on the phone'. How many words contain the letter 'e' in the sentence.

Ex Output:
3


Ex Input:
Sentence: 'a tray with pancakes bacon eggs cucumbers coffee and syrup'. How many words contain the letter 'a' in the sentence.

Ex Output:

5