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

Ex Input:
Sentence: 'a kitchen with a dining room table and a sitting area'. How many words contain the letter 'r' in the sentence.

Ex Output:
2


Ex Input:
Sentence: 'green bananas or plantains hang in a bunch on a tree'. How many words contain the letter 'm' in the sentence.

Ex Output:
0


Ex Input:
Sentence: 'a bunch of peope skii across a big hill top'. How many words contain the letter 'g' in the sentence.

Ex Output:

1