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

Example Input: Sentence: 'a black and white photo of a plane sitting on a runway'. How many words contain the letter 'b' in the sentence.
Example Output: 1

Example Input: Sentence: 'living room that has boxes packed for moving'. How many words contain the letter 'u' in the sentence.
Example Output: 0

Example Input: Sentence: 'a bathroom with white and green tiled walls'. How many words contain the letter 'u' in the sentence.
Example Output:
0