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

Input: Consider Input: Sentence: 'a black sign that is standing in the grass'. How many words contain the letter 'f' in the sentence.

Output: 0


Input: Consider Input: Sentence: 'a group of people cooking pancakes in the field'. How many words contain the letter 'g' in the sentence.

Output: 2


Input: Consider Input: Sentence: 'an old fashioned typewriter that has a wooden case'. How many words contain the letter 'o' in the sentence.


Output: 3