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

Input: Consider Input: Sentence: 'a person leaning on an elephant statue near trees'. How many words contain the letter 's' in the sentence.

Output: 3


Input: Consider Input: Sentence: 'a woman standing in the dirt looking up at an elephant'. How many words contain the letter 'b' in the sentence.

Output: 0


Input: Consider Input: Sentence: 'a person with their feet propped up watching television'. How many words contain the letter 'r' in the sentence.


Output: 3