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

Example Input: Sentence: 'bus moving through parking lot in front of building'. How many words contain the letter 'g' in the sentence.
Example Output: 4

Example Input: Sentence: 'a bench is in the ocean water with a fishing pole'. How many words contain the letter 'm' in the sentence.
Example Output: 0

Example Input: Sentence: 'a stop sign overlooking a river and port'. How many words contain the letter 'n' in the sentence.
Example Output:
3