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

Input: Consider Input: Sentence: 'a man herding brown colored animals with a dog'. How many words contain the letter 'z' in the sentence.

Output: 0


Input: Consider Input: Sentence: 'a group of people skiing down a mountain slope'. How many words contain the letter 'e' in the sentence.

Output: 2


Input: Consider Input: Sentence: 'a cellphone and a mitten are placed on a table'. How many words contain the letter 'g' in the sentence.


Output: 0