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

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: 'a computer desk holding a laptop computer and white ceramic lamp'. How many words contain the letter 'r' in the sentence.
Example Output: 3

Example Input: Sentence: 'a woman putting a pizza in an industrial sized pizza oven'. How many words contain the letter 'r' in the sentence.
Example Output:
1