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

Example Input: Sentence: 'a bearded man sits on a couch with an electronic device in his hand'. How many words contain the letter 'e' in the sentence.
Example Output: 3

Example Input: Sentence: 'a person is riding a bicycle on the street'. How many words contain the letter 'b' in the sentence.
Example Output: 1

Example Input: Sentence: 'there are many doughnuts on the table'. How many words contain the letter 'q' in the sentence.
Example Output:
0