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: 'multiple birds on the ground in a parking lot'. How many words contain the letter 'm' in the sentence.

Output: 1


Input: Consider Input: Sentence: 'a dog laying on the back of a flatbed truck with a camper'. How many words contain the letter 't' in the sentence.


Output: 4