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

Example Input: Sentence: 'an asian man ad woman on their cell phones'. How many words contain the letter 'i' in the sentence.
Example Output: 2

Example Input: Sentence: 'two motorcycle riders pose with motorcycles in front of a brick building'. How many words contain the letter 'c' in the sentence.
Example Output: 3

Example Input: Sentence: 'a leafy greens garden salad with a brown drink'. How many words contain the letter 'x' in the sentence.
Example Output:
0