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

Input: Consider Input: Sentence: 'a bunch of white hyacinths arranged in a vase'. How many words contain the letter 'r' in the sentence.

Output: 1


Input: Consider Input: Sentence: 'a pizza sitting on top of a black cutting board'. How many words contain the letter 'g' in the sentence.

Output: 2


Input: Consider Input: Sentence: 'a white car parked in a parking space'. How many words contain the letter 't' in the sentence.


Output: 1