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

Example Input: Sentence: 'a woman standing in the dirt looking up at an elephant'. How many words contain the letter 'b' in the sentence.
Example Output: 0

Example Input: Sentence: 'a man that is sitting at a table with a bowl'. How many words contain the letter 'k' in the sentence.
Example Output: 0

Example Input: Sentence: 'a old banana sitting in a wooden bowl'. How many words contain the letter 'm' in the sentence.
Example Output:
0