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

Input: Consider Input: Sentence: 'a grey cat sitting in a metal kitchen sink next to cans of soda'. How many words contain the letter 't' in the sentence.

Output: 6


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 woman standing in the dirt looking up at an elephant'. How many words contain the letter 'b' in the sentence.


Output: 0