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

Example Input: Sentence: 'a man in a tie that is looking to the side'. How many words contain the letter 'm' in the sentence.
Example Output: 1

Example Input: Sentence: 'a surfer in a black wet suit riding a wave in the ocean'. How many words contain the letter 'x' in the sentence.
Example Output: 0

Example Input: Sentence: 'three giraffes grazing from a tree in grassy area next to buildings'. How many words contain the letter 'c' in the sentence.
Example Output:
0