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

Input: Consider Input: Sentence: 'several ties hang from a bar in a closet'. How many words contain the letter 'e' in the sentence.

Output: 3


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: 'an action figure next to a brown teddy bear'. How many words contain the letter 'a' in the sentence.


Output: 4