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

Example Input: Sentence: 'a man with a hat on sitting in a car with the door open and a laptop on his lap'. How many words contain the letter 'e' in the sentence.
Example Output: 2

Example Input: Sentence: 'a group of people on skis on a snowy slope'. How many words contain the letter 'w' in the sentence.
Example Output: 1

Example Input: Sentence: 'a docked boat is lit up at night'. How many words contain the letter 'b' in the sentence.
Example Output:
1