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

Example Input: Sentence: 'a woman with a green umbrella crosses the wet street'. How many words contain the letter 'q' in the sentence.
Example Output: 0

Example Input: Sentence: 'a woman sitting in a chair next to a tea table in the woods'. How many words contain the letter 'i' in the sentence.
Example Output: 4

Example Input: Sentence: 'a baseball player swings for a hit on the field as several of his team mates watch him'. How many words contain the letter 'm' in the sentence.
Example Output:
3