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

Example Input: Sentence: 'two skiers standing side by side in the snow posing for a picture'. How many words contain the letter 'u' in the sentence.
Example Output: 1

Example Input: Sentence: 'a silver truck a street a person and buildings'. How many words contain the letter 'l' in the sentence.
Example Output: 2

Example Input: Sentence: 'a living room with wooden walls and a tv'. How many words contain the letter 'b' in the sentence.
Example Output:
0