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

Ex Input:
Sentence: 'pieces of food sit on the plate the man is holding'. How many words contain the letter 'o' in the sentence.

Ex Output:
4


Ex Input:
Sentence: 'individuals are up and doing something fun today'. How many words contain the letter 'p' in the sentence.

Ex Output:
1


Ex Input:
Sentence: 'a single tall flower in a green glass vase sitting on a windowsill'. How many words contain the letter 'x' in the sentence.

Ex Output:

0