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 srufing the waves on a board in front of 3 tall pillars'. How many words contain the letter 'n' in the sentence.

Output: 5

Input: Consider Input: Sentence: 'two elephants are standing by the concrete barrier'. How many words contain the letter 'c' in the sentence.

Output: 1

Input: Consider Input: Sentence: 'a person sitting in the snow with their snowboard'. How many words contain the letter 'j' in the sentence.
Output: 0