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

Example Input: Sentence: 'a blue traffic sign next to a parked car on a city street'. How many words contain the letter 'g' in the sentence.
Example Output: 1

Example Input: Sentence: 'two zebras standing next to each other in the dried grass'. How many words contain the letter 'q' in the sentence.
Example Output: 0

Example Input: Sentence: 'a man holding a tennis racket in one hand and a ball in the other'. How many words contain the letter 'c' in the sentence.
Example Output:
1