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 wooden bench sits leveled straight on a slanted ground'. How many words contain the letter 'l' in the sentence.

Output: 2


Input: Consider Input: Sentence: 'a living room with couches chairs and tables'. How many words contain the letter 'a' in the sentence.


Output: 4