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

Example Input: Sentence: 'bus parked next to a side walk on the road'. How many words contain the letter 'd' in the sentence.
Example Output: 3

Example Input: Sentence: 'a person in the air on skis on a mountain slope'. How many words contain the letter 'w' in the sentence.
Example Output: 0

Example Input: Sentence: 'there is a baseball player at bat at the game'. How many words contain the letter 'l' in the sentence.
Example Output:
2