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

Example Input: Sentence: 'the facades of the buildings in the row are all the same'. How many words contain the letter 'f' in the sentence.
Example Output: 2

Example Input: Sentence: 'two animals are walking along in a field'. How many words contain the letter 'y' in the sentence.
Example Output: 0

Example Input: Sentence: 'a couple of birds sitting on top of a tree stump'. How many words contain the letter 'l' in the sentence.
Example Output:
1