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

Input: Consider Input: Sentence: 'three zebras are shown in a black and white photo'. How many words contain the letter 'y' in the sentence.

Output: 0


Input: Consider Input: Sentence: 'people standing in a river surrounding an elephant some are touching it'. How many words contain the letter 'd' in the sentence.

Output: 2


Input: Consider Input: Sentence: 'a group of people out on a boat and a man on a jet ski'. How many words contain the letter 'j' in the sentence.


Output: 1