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

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

Output: 2


Input: Consider Input: Sentence: 'guys in a living room playing a wii bowling game'. How many words contain the letter 'c' in the sentence.

Output: 0


Input: Consider Input: Sentence: 'a child playing with a kite on the ground'. How many words contain the letter 'o' in the sentence.


Output: 2