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

Input: Consider Input: Sentence: 'a grown elephant with two baby elephants standing in tall grasses'. How many words contain the letter 'w' in the sentence.

Output: 3


Input: Consider Input: Sentence: 'a cat that is laying down with a mouse on top of it'. How many words contain the letter 'm' in the sentence.

Output: 1


Input: Consider Input: Sentence: 'crates of fruit and vegetables are on display'. How many words contain the letter 'a' in the sentence.


Output: 5