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

Ex Input:
Sentence: 'a boy in a car on a laptop'. How many words contain the letter 'j' in the sentence.

Ex Output:
0


Ex Input:
Sentence: 'people holding a surfboard and walking down the beach'. How many words contain the letter 'n' in the sentence.

Ex Output:
4


Ex Input:
Sentence: 'three children in a grassy field holding baseball bats'. How many words contain the letter 'd' in the sentence.

Ex Output:

3